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BIOS251 OL, Week 1 Lab Name: Maryssa Angulo OL Lab 1: Homeostatic Control: How does the human body keep itself in balance? Learning Objectives:  List some of the main physiological variables under homeostatic control  Employ appropriate vocabulary to discuss the processes and concepts of homeostasis  Explain the steps in a homeostatic pathway from stimulus to response  Compare different types of feedback loops  Identify signs of homeostatic disruption and determine the underlying mechanism Introduction: The human body is a very complex combination of finely-tuned machinery. Every organ system is dependent on the other to carry out its physiological functions along with maintaining an internal equilibrium. Homeostasis is the ability of the body to maintain an internal balance to in the body. So how does it always keep everything in balance? In this simulation, you will learn about the underlying regulatory workflow involved in the homeostatic process, through the examples of body temperature, blood pressure, and blood sugar regulation. Observe homeostasis in action You will test different settings on our virtual volunteer, Phineas. You will observe and analyze how the body reacts to the various stimuli such as changes in temperature, heart rate, and blood glucose levels in the body. Using a 3D model of the human body, you will be able to apply one or more stimuli on the test subject, to observe an immediate visible impact on physiological variables. From your observations, you will identify the sensors detecting the stimuli, the control center processing them, and the effectors acting to counter them on Phineas’ body. Finally, you will interpret the resulting changes in those variables to explain the homeostatic phenomenon.

BIOS251 OL, Week 1 Lab Name: Maryssa Angulo Part 1: Complete Labster Homeostatic Control Complete. Part 2: Report and Reflection Purpose: Describe in your own words and in complete sentences, the purpose of this experiment. The purpose of this experiment was to show how different activities effect the bodies normal resting homeostasis. It demonstrated what the bodies vitals were when resting, moderate exercise, intense exercise, also what happens to the body when eating a snack. Each of the factors that were used in the experiment demonstrated what happens to the bodies homeostasis and how each factor changes what happens to maintain balance throughout the entire body. For example, the body adjusted to the blood sugar levels using insulin and glucagon to maintain a healthy level of glucose. Observations: List 2 observations you have made in this simulation.  When the volunteer Phineas began to intensely exercise the bodies heart rate increased.  When the volunteer ingested the snack the bodies reaction to the snack was to maintain homeostasis by the insulin and glucagon working together to maintain a healthy balance. Answer all the questions below: 1. Why is it essential to have maintain homeostasis? (1 point) So the body can maintain a healthy balance throughout all of the organs and it can maintain a healthy function. 2. Provide an example of positive feedback mechanism and identify the stimuli, the central processing unit and the effectors involved in the pathway. (2 points) When the body releases oxytocin during labor, the stimuli is increased contractions due to the oxytocin to complete the delivery. 3. In the simulation, what were the organs involved in homeostatic control? (2 points) The integumentary system, and the pancreas.

BIOS251 OL, Week 1 Lab Name: Maryssa Angulo 1. Using the figure below identify the abdominopelvic regions (5 points)

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BIOS251 OL, Week 1 Lab Name: Maryssa Angulo Regions A Right upper Quadrant (hypochondriac) B Epigastric quadrant C Left upper quadrant (hypochondriac) D Right Lumbar quadrant E Umbilical Quadrant F Left Lumber Quadrant G Right lower Quadrant (Iliac) H Hypogastric Quadrant I Left lower quadrant (iliac)

BIOS251 OL, Week 1 Lab Name: Maryssa Angulo 1. Reflection: Reflect on at least 2 key concepts you have learned from this simulation. How would you relate it to the physiological functions of the body? Two key concepts that I have taken away from this lab are, the importance of the body to maintain a healthy homeostasis so the functions throughout the body remain within normal levels. Also, what happens to the body when eating a snack and how sugar really effects your glucagon and insulin levels. Both of these take aways are main bodily functions that are happening within our body without us even knowing that they are taking place and keeping the body regulated. Grading Rubric: Activity Deliverable Points Part 1 Complete simulation 15 Part 2 Complete lab report and answer questions  Purpose (1 point)  Observation (2 points)  Questions (10 points)  Reflection (2 points) 15 Total Complete all lab activities 30