Homeostasis And Feedback Loops Worksheet Answer Key

Showing top 8 worksheets in the category - Negative Feedback Loop. Ideas to focus on: What are the different types of mutations, and how do they affect the product of the gene? DNA mutations can be positive, negative, or neutral based on the effect or the lack of effect they have on the resulting nucleic acid or protein and the phenotypes that are conferred by the protein. Also indicate whether it is a negative or positive feedback loop. The change is detected by a sensor. Here we shall look at three more examples of homeostasis in detail: • temperature, • blood glucose and • blood water. Anatomy and Physiology HLSC1700. and homeostasis is restored. University of Ontario Institute of Technology. Climate Feedback Mechanisms Answer Key. Out of the three hormonal control systems previously mentioned, the most predominant is the negative feedback loop (hormones that affect hormones). Answer the following questions on pps. 1) Positive feedback loops are less common in homeostatic processes, and are often part of a larger negative feedback loop. If you go into labor, the loop continues until you deliver, then it's over and you go back to your original state. Homeostasis is dynamic. We discuss feedback loops again as. The worksheet is an assortment of 4 intriguing pursuits that will enhance your kid's knowledge and abilities. Study the next subject: go to Nutrients and Vitamins. Some of the worksheets displayed are Homeostasis feedback mechanisms, Homeostasis and feedback work, Keeping a balance homeostasis and negative feedback, Feedback loops interpreting graphics, 1 water homeostasis, Homeostasis and feedback work, Homeostasis positive and negative feedback mechanism, Lecture. indirect evidence to develop and support claims about the effectiveness of feedback loops to maintain homeostasis. org are unblocked. Learn how organisms maintain homeostasis, or a stable internal environment. We will work to understand how both are used in regards to homeostasis, and how to identify the loop based on scenarios/graphs. com Homeostasis and negative feedback by Gething Teaching Resources Tes from Homeostasis Worksheet. With this interactive quiz and printable worksheet, you can learn about how homeostasis is regulated through feedback systems. Give an example for each. There are always some losses in the feces, urine, and in sweat. Examples such as blood sugar, body temperature, stress, labor & delivery and blood clotting are covered. Unit 3 KUD. Homeostasis worksheet. Homeostatsis Feedback Loops. Negative feedback is a vital control mechanism for the body’s homeostasis. Homeostasis worksheets with answer key go over negative and positive feedback. The heart pumps blood throughout the body in blood vessels. Find feedback loops lesson plans and teaching resources. Paul andersen explains how feedback loops allow living organisms to maintain homeostasis. This state of energy creation and use has multiple effects on your body's homeostasis including increased heart rate, breathing and sweat rate. Homeostasis Bundle Power point Chart Worksheets and Answer key from Homeostasis Worksheet, source: educents. Modify with your own questions and answers. jump rope/skipping rope thermometer. Examples such as blood sugar, body temperature, stress, labor & delivery and blood clotting are covered. Negative Feedback: In a negative feedback system some factor, such as blood pressure, changes. This course is designed to provide an overview of all the courses in the biomedical. Negative feedback processes result in reduction to change from equilibrium by inhibiting processes that deviate from equilibrium. occurs when a. The descend of the baby causes stronger contractions, which release more oxytocin, which causes. Homeostasis [back to top] Homeostasis literally means "same state" and it refers to the process of keeping the internal body environment in a steady state. Cybernetics is the study of how information-processing systems are self-correcting, controlled by feedback loops. Sensory receptors send messages to the central and/or peripheral nervous system which then send a signal back through a motor neuron which causes a muscle movement (think of a reflex). back loop with selected parts missing. Unit 11 Study Guide Answer Key Human Systems SECTION 28. Cell Membrane Entry/Exit Ticket. 2 Mechanisms of Homeostasis KEY CONCEPT Homeostasis is the regulation and maintenance of the internal environment. Learn more about the characteristics and functions of homeostasis. Feedback Loops: Insulin and Glucagon. Main activity: I put two unlabeled loops, with the cut out labels in an envelope, with the worksheet stuck on the envelope. OpenStax College resources provide quality academic instruction. Endocrine System Worksheet #2 - Homeostasis Book Pgs. The presentation should emphasize the endocrince glands involved and their negative feedback loops, the disturbances in homeostasis, and the interpretation of test results. Discuss the locations and structures of the thyroid and parathyroid glands. 3 Feedback: This lab has some strengths and weaknesses but is mainly a good lab. Some of the worksheets displayed are Feedback loops interpreting graphics, Feedback loops interpreting graphics, Homeostasis and feedback work, Homeostasis and feedback work, 1 water homeostasis, Gcse biology negative feedback, Homeostasis positive and negative feedback mechanism, Lesson 2 systems in environmental science. POGIL 2 - Introduction to Homeostasis MODEL 1: Negative Feedback Loop Homeostasis is an important ability associated with living organisms. This interactive quiz and printable worksheet on feedback loops is accessible at any time. Unit 1 Energy, Ecosystems, Cycles. MRI therapists are guided by the principles derived from cybernetics. Causality is circular. a difference in the concentration of molecules throughout a space. Describe the relationship between homeostasis and feedback loops. How negative feedback loops work – a closer look at the hormone cortisol. Homeostasis Bundle Power point Chart Worksheets and Answer key from Homeostasis Worksheet, source: educents. Worksheet/Answer key. Answer the following questions on pps. MRI therapists are guided by the principles derived from cybernetics. As such, negative feedback is a very important component of homeostasis because negative feedback loops are often self-regulating, and are usually very stable. For each of the cycles in Model 2 identify the stimulus and response for the feedback loops and indicate whether the feedback loop is positive or negative feedback. 1- A person was admitted in a coma. From the human nervous system to controlling body temperature and negative feedback, there is a lot to learn as part of the homeostasis and response topic. and homeostasis is restored. Homeostasis involves maintaining the internal environment between limits, including blood pH, carbon dioxide concentration, blood glucose concentration, body temperature and water balance. As yet, though the basics of the hydrological cycle are fairly well understood, we have very little comprehension of the complexity of the feedback loops. Examples: muscle, nerve, skeletal cells 3. Homeostatsis Feedback Loops. For example, your body shivers to maintain a relatively constant body temperature when the external environment gets colder. Showing top 8 worksheets in the category - Homeostasis Feedback Answer Key. 6 Feedback Control in Systems Biology - + + Tryptophan P1 P2 P3 - - C1 C2 C3 FIGURE 1. Homeostasis Worksheet Name Period Date Determine whether the following examples are. Chapter 45: Hormones and the Endocrine System 1. Showing top 8 worksheets in the category - Negative Feedback Loop. A positive feedback accelerates a temperature rise,. So the feedback loop is the way the body keeps everything in balance. When the brain receives messages from the body about an internal change in one of its systems, it works to restore the system to its normal state. compositive-and-nesgltive-fedtackdo. University of Ontario Institute of Technology. Negative Feedback Loop. back loop with selected parts missing. Human biology II. Homeostasis defined: b. There are always some losses in the feces, urine, and in sweat. Student Page. The Effects of Exercise on Homeostasis. Feedback Mechanisms. exploringnature. Showing top 8 worksheets in the category - Feedback Loops. At the Finish Line: 1. Negative feedback. Find feedback loops lesson plans and teaching resources. 0 International License, except where otherwise noted. Mader's Understanding Human Anatomy & Physiology; 7 th Lecture on homeostasis with feedback loop diagrams Cell Structure Worksheet and Class Discussion. In this way, a negative feedback loop brings a system closer to a target of stability or homeostasis. Unit 3 KUD. Homeostatsis Feedback Loops - Displaying top 8 worksheets found for this concept. Homeostasis is maintained by negative feedback to help get Jim's body back to normal state. Step Two This "Hands On" lab experiment is titled, "Human Homeostasis". Negative feedback turns off the stimulus that caused it in the first place. The stability attained represents a dynamic equilibrium, in which continuous change occurs yet relatively uniform conditions prevail. Unit 3: Homeostasis. Receptors are present on the target organs and they send negative feedback signals to the hypothalamus in the brain. He uses thermoregulation in mammals to explain how a negative feedback loop functions. indirect evidence to develop and support claims about the effectiveness of feedback loops to maintain homeostasis. Determination—stem cells commit to becoming only one type of cell. Each presentation should take about 10 minutes and should deal with every questions provided for the case,although questions can be addressed in any order. describe how organisms maintain stable internal conditions while living in changing external environments. Terrestrial plants and their water supply. As blood glucose goes up, your body signals the pancreas and insulin is produced. Homeostasis and. To summarize the role of the endocrine system in homeostasis. Take advantage of it to study before, during, and after. Here we shall look at three more examples of homeostasis in detail: • temperature, • blood glucose and • blood water. How does a hairless cat maintain homeostasis? Through. In fact, this is probably the most oddly specific topic found in NGSS. 2 1 3 a feedback student response sheet (revised 10 2 14) - Free download as Word Doc (. Homeostasis and Feedback Worksheet Part One – Fill in the blanks. Human Biology Lab Online, BIOL 1128-29. Best of all, they are entirely free to find, use and download, so there is no cost or stress at all. Start studying feedback mechanisms. Organization of body + homeostasis - worksheet. docx), PDF File (. Some of the worksheets for this concept are Homeostasis quiz, Homeostasis and feedback work, Keeping a balance homeostasis and negative feedback, Water homeostasis, 1 water homeostasis, Homeostasis positive and negative feedback mechanism, 10c, Feedback mechanisms. Adjust the levels of clothing, perspiration, and exercise to maintain a stable internal temperature as the external temperature changes. For an interview lesson I did (no, I didn't get the job, but got good feedback about the lesson!). Negative feedback processes result in reduction to change from equilibrium by inhibiting processes that deviate from equilibrium. fats are important fuel for prolonged work, even small increases in fat utilization during energy expenditure can reduce CHO metabolism (preserving glycogen, blood glucose levels, and lower lactate production). These body responses are an example of negative feedback. Feedback loops help maintain homeostasis by allowing the organism to respond to changes in its environment. A 30 question printable unit 4 homeostasis crossword with answer key. Exchange occurs as substances dissolved in an aqueous solution move across the plasma membrane of each cell. Free learning resources for students covering all major areas of biology. This Homeostasis and Feedback Worksheet Worksheet is suitable for 9th - Higher Ed. While the AVP from the posterior pituitary is secreted into the circulation and modulates fluid and electrolyte homeostasis, AVP of PVN origin, like CRH, is secreted into the hypophyseal portal system and holds a key role in the stress response, representing the second most important modulator of pituitary ACTH secretion [32]. (b) Body temperature is regulated by negative feedback. and activates mechanisms that accelerate or increase that change. Displaying top 8 worksheets found for - Homeostatsis Feedback Loops. 2018 Objective: Today I am going to complete a ISN Body Systems Pull Out so that I can define the main function of each system and the key organ structures found in each system. Your body also maintains relatively constant levels of O 2, CO 2, H+ and other internal conditions. Is this response an example of a positive or negative feedback loop? Explain. and homeostasis is restored. Free learning resources for students covering all major areas of biology. Part of the reason for this adaptability is the body's ability to maintain homeostasis. What are chemical bonds? (Pages 38-39) What are the two major types? Bonds that keep atoms together. Endocrine System. The sensor sends a message to an integrating center which in turn stimulates an effector. It is typically carried out through a process using a negative feedback loop, similar to the loop that controls the temperature in a house. Explain the difference between animals that are regulators and those that are conformers. Covers the following skills: Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells. Use a model to show that multicellular organisms have a hierarchical structure. back loop with selected parts missing. If you continue browsing the site, you agree to the use of cookies on this website. Conditions within the body must remain within the narrow limits that support life. What does this mean? 3. docx), PDF File (. The human organ systems work together to achieve homeostasis. This 2015 activity, "Homeostasis and Negative Feedback - Concepts and Breathing Experiments", is essentially a new activity with a minor overlap with the previous breathing activity. an aqueous solution. Starter game gets the students to be a positive and negative feedback loop. Describe the relationship between homeostasis and feedback loops. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Some of the worksheets for this concept are Homeostasis positive and negative feedback mechanism, Homeostasis feedback mechanisms, Academic discussions giving positive and negative feedback, Countering negative thoughts, Keeping a balance homeostasis and negative feedback, Module. Showing top 8 worksheets in the category - Positive And Negative Feedback. In this homeostasis worksheet, students sketch and label graphs showing homeostasis for the following conditions: blood glucose, temperature, systolic blood pressure, and blood pH. As blood glucose goes up, your body signals the pancreas and insulin is produced. Describe how this negative feedback loop works to maintain body temperature. Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. Draw a diagram similar to Models 2 and 3 for one of the feedback mechanisms in Question 19. 4 Putting It All Together: The Nervous System and the Endocrine System by Jennifer Walinga and Charles Stangor is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4. In this homeostasis activity, high schoolers answer twelve questions about positive and negative feedback loops and how they effect homeostasis. Platelets then release more hormones that signal even more platelets to help stop bleeding. Water and blood sugar levels need to be replenished regularly, and fatigue occurs with heavy exercise. The antagonistic effects on blood glucose levels. lows these organs to maintain fluid, electrolyte, acid-base, and blood pressure homeostasis. Examples such as blood sugar, body temperature, stress, labor & delivery and blood clotting are covered. The NGSS standards require a thorough knowledge of homeostasis in the human body, and thus I developed this simple, understandable worksheet wi. Negative Feedback: In a negative feedback system some factor, such as blood pressure, changes. Key Concepts Negative feedback Feedback inhibition Positive feedback Set point Homeostasis Circadian and other physiological rhythms 2. Mader's Understanding Human Anatomy & Physiology; 7 th Lecture on homeostasis with feedback loop diagrams Cell Structure Worksheet and Class Discussion. Skipped a meal. Animal Physiology > Homeostasis > Topic 1: Ben's Bad Day (1 of 2) homeostasis in the real Ben is automatic, but imagine that you are in control! Send feedback. Understand the. The key to calcium homeostasis is the amount of calcium absorbed in the gut. VOCABULARY homeostasis, p. Homeostasis Notes. A comprehensive database of more than 22 homeostasis quizzes online, test your knowledge with homeostasis quiz questions. Learn more about the characteristics and functions of homeostasis. and activates mechanisms that accelerate or increase that change. To outline the result of a disturbance in homeostasis of a body system. Figure 4: The process of wound clotting is a positive feedback loop. How does a neuron's structure allow it to receive and send messages? 4. 03 Investigate and analyze the cell as a living system including: maintenance of homeostasis, movement of materials into and out of cells, and energy use and release in biochemical reactions. compositive-and-nesgltive-fedtackdo. 5-2 m2) General Functions: 1. Below you will find a copy of the practice test, as well as the answer key. The body maintains a relatively constant internal temperature to optimize chemical processes. 859 negative feedback, p. Negative feedback is a vital control mechanism for the body’s homeostasis. 018 - Positive and Negative Feedback Loops Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. Negative feedback mechanisms are found in the regulation of. The cells and organs of living organisms can only exist in a narrow range of conditions. lines hollow organs such as the stomach and bladder, and plays an integral role in the epidermis?. Some of the worksheets for this concept are Homeostasis quiz, Homeostasis and feedback work, Keeping a balance homeostasis and negative feedback, Water homeostasis, 1 water homeostasis, Homeostasis positive and negative feedback mechanism, 10c, Feedback mechanisms. Negative feedback processes result in reduction to change from equilibrium by inhibiting processes that deviate from equilibrium. Positive Feedback and Rapid Change The counterpart to negative feedback is the positive feedback loop, a process in which the body senses a change and activates mechanisms that accelerate or increase that change. Feedback Loops: Insulin and Glucagon. This interactive quiz and printable worksheet on feedback loops is accessible at any time. Explain how/why the nervous system and the endocrine system control the homeostatic mechanisms of the body. Three key features set our materials apart from others: 1) They can be easily customized by instructors for each class, 2) they are “living” resources that grow online through contributions from science educators, and 3) they are available for free or for a minimal cost. Cesarean Birth (C-section) Oxytocin causes much stronger contractions of the uterus. Climate Feedback Mechanisms Answer Key. Homeostasis, from the Greek words for "same" and "steady," refers to any process that living things use to actively maintain fairly stable conditions necessary for survival. 2 Mechanisms of Homeostasis 4B, 10A, 11A. The body maintains a relatively constant internal temperature to optimize chemical processes. Relate the common phrase “a vicious cycle” to feedback loops. pdf What students are saying As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students. 2 1 3 a feedback student response sheet (revised 10 2 14) - Free download as Word Doc (. Homeostasis quiz internal environment by using _____ feedback. Homeostasis [back to top] Homeostasis literally means “same state” and it refers to the process of keeping the internal body environment in a steady state. Negative feedback processes result in reduction to change from equilibrium by inhibiting processes that deviate from equilibrium. Terrestrial plants and their water supply. Skipped a meal. From negative feedback loops worksheets to feedback loops endocrine videos, quickly find teacher-reviewed educational resources. feedback mechanisms pogil answer key PDF may not make exciting reading, but feedback. Learn vocabulary, terms, and more with flashcards, games, and other study tools. biological homeostasis; Negative feedback loops tend to the environment and positive feedback loops tend to. Take advantage of it to study before, during, and after. The Effects of Exercise on Homeostasis. Homeostasis worksheets with answer key go over negative and positive feedback. There are a variety of mechanisms and vital functions that are maintained through homeostasis; blood glucose, blood pH, blood pressure, body temperature, O2 and CO2 levels, etc. and activates mechanisms that accelerate or increase that change. 2) Positive feedback loops sometimes produce the very opposite of homeostasis: rapid loss of internal stability with potentially fatal consequences. Homeostasis is regulated by negative feedback loops and, much less frequently, by positive feedback loops. Feedback Loop: mechanism, { gels a var;a ble back % a 2. Explain how amoebas, hydras, tapeworms, and whales exchange materials with their environment. If action is required to maintain homeostasis, hormones are released, either directly by an endocrine gland or indirectly through the action of the hypothalamus of the brain,. In turn, the rise in blood pressure and volume resulting from the various actions of angiotensin II and aldosterone reduce the release of renin. Homeostasis is maintained by negative feedback to help get Jim's body back to normal state. I understand that you are the cream of the crop at Nease, and I am certain you will find this course challenging and fascinating. Condensed Cheat Sheet Each tutorial has a one-page cheat sheet that summarizes the key concepts and equations presented in the tutorial. Worksheet to complement eChalk resource: the eChalk website to help you answer these questions. Some of the worksheets displayed are Homeostasis work, Homeostasis cloze work, Keeping a balance homeostasis and negative feedback, Homeostasis and feedback work, Homeostasis quiz, Homeostasis feedback mechanisms, Homeostasis its all a matter of balance, Homeostasis and feedback work. Matching and multiple-choice questions on homeostasis and negative and positive contol mechanisms. Some of the worksheets for this concept are Homeostasis positive and negative feedback mechanism, Homeostasis feedback mechanisms, Academic discussions giving positive and negative feedback, Homeostasis and feedback work, Keeping a balance homeostasis and negative feedback, Module. Homeostasis. The second worksheet has students review the positive and negative feedback loops and become familiarized with how they work. What is a hormone? In animals, hormones are secreted into the extracellular fluid, circulate in the hemolymph or blood, and communicate regulatory messages throughout the body. feedback mechanisms pogil answer key PDF may not make exciting reading, but feedback. 2018 Objective: Today I am going to complete a ISN Body Systems Pull Out so that I can define the main function of each system and the key organ structures found in each system. Sara Klein and Michal Zion. 2 1 3 a feedback student response sheet (revised 10 2 14) - Free download as Word Doc (. Negative Feedback Loop. Homeostasis and Feedback Mechanisms. 1 Levels of Organization 10C 28. View Positive-Negative Feedback Loops HW KEY. Homeostatsis Feedback Loops. Stimulus Response Positive or Negative? Cycle A Cycle B 13. Remember to teach students in following lessons to utilize a bi-metallic stemmed, food service grade, or digital thermometer for an accurate read. Topics Covered: Endocrine system, hormones, glands, feedback loops, negative feedback, insulin, glucagon, melatonin, adrenaline, growth hormone Check out the worksheet that goes along with the game, courtesy of Ms. info Lovely Ecological Succession Worksheet Awesome…. Here are some homeostasis examples, beginning with the human body, then moving on to examples in animals and plants. Glucose Feedback - Displaying top 8 worksheets found for this concept. They use a graphic organizer to illustrate feedback control mechanisms for regulating body temperature. Objectives. You need to know the basic functions of the human immune system. While homeostasis is a theme for many units in biology, feedback mechanisms are fairly specific. Give students their start and end time, show where the paper and markers are located in the room, and ask one representative from each group to come up to get their group's scenario. Diabetes is a condition where the body cannot regulate its blood glucose levels. He begins by differentiating between negative and positive feedback loops. Often this homeostatic control takes the form of negative feedback loops. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels. Choose one of the following feedback mechanisms found in nature. In this exercise, you will make graphs using various sets of data. • Not common - examples - lactation and labor contractions • Action of OXYTOCIN on uterine muscle during birth. Feedback Loops TedEd; You should be able to answer the following questions by the end of the period. Homeostasis To maintain homeostasis, cells must be able to sort and send substances to specific locations The Golgi apparatus is key in sorting and packaging macromolecules, particularly proteins The endoplasmic reticulum is the location for protein (rough ER) and lipid (smooth ER) synthesis and transports proteins within the cell. In a negative feedback loop, physiological mechanisms work to counteract changes that move internal conditions above or below set values. Homeostasis Quizlet. Multiple Choice Questions- Acid Base Balance Q. Chapter 40: Basic Principles of Animal Form and Function a common theme has been regulation of homeostasis by feedback loops. In many cases, the hormones released from the target gland act back on the pituitary and/or hypothalamus, repressing. Homeostasis (including non-communicable diseases) With the topic of homeostasis students often fail to make the link between external changes (effect of drinking a lot of water, resulting in increased urine output) with the internal changes that bring about the external changes. Homeostasis Worksheet Always graph time on the horizontal (X) axis. Homeostasis is the activity of cells throughout the body to maintain the physiological state within a narrow range that is compatible with life. You will need to comprehend how to project cash flow. NB Identify a change in your environment that might affect homeostasis. Guide to Physiology. How does a hairless cat maintain homeostasis? Through. Homeostasis and Feedback Mechanisms. In biology, homeostasis is the state of steady internal physical and chemical conditions maintained by living systems. Choose one of the following feedback mechanisms found in nature. Students model the endocrine system by participating in a system that makes. The antagonistic effects on blood calcium levels. They can be assigned as homework or completed in class before an exam. Endocrine System. A feedback loop maintains homeostasis by keeping variables within particular limits. Free learning resources for students covering all major areas of biology. Cell organelle chart. Homeostasis worksheets with answer key go over negative and positive feedback. Skipped a meal. Problem #1:. Understand the. Homeostasis is the regulation of conditions in the body such as temperature, water content and carbon dioxide levels. identify conditions that need to stay constant to keep the body in equilibrium. Showing top 8 worksheets in the category - Positive And Negative Feedback. 9- Cellular Respiration *CLASS - How cell obtain energy *CLASS: Khan Academy Oxidation/Reduction reactions. Choose one of the following feedback mechanisms found in nature. MECHANISMS OF HOMEOSTASIS 1. Homeostasis. Negative Feedback plays a key role in maintaining body homeostasis. Describe how this negative feedback loop works to maintain body temperature. (What is glucose homeostasis, ©2003-2012) The glucose molecules are broken down to produce ATP molecules; these cells power numerous cellular processes. Animal Physiology > Homeostasis > Topic 1: Ben's Bad Day (1 of 2) homeostasis in the real Ben is automatic, but imagine that you are in control! Send feedback. Whether or not a process is controlled by negative or positive feedback loops can often be determined by examining graphs of relevant data. Homeostasis Videos. Negative Feedback Loop. Find feedback loops lesson plans and teaching resources. Human biology II. NB Identify a change in your environment that might affect homeostasis. If you're seeing this message, it means we're having trouble loading external resources on our website. Jim has stopped rowing and his muscles are now at. The collection is not comprehensive: it does not have activities for every body system, but what we do offer is a good first step to introducing POGIL to your students. Diffusion is an active process that requires a cell to expend a great deal of energy. refers to the maintenance of relatively constant internal conditions. Make sure you include the Homework # on the assignment. Homeostasis allows the body to perform its normal functions. The Endocrine System Releasing hormone Pituitary hormone Target gland hormone Short-loop feedback Hypothalamus Figure 2 Schematic representation of negative feedback mechanisms that control endocrine system activity.