Week 1 Homeostasis Lab - homo lab PDF

Preview

Summary

homo lab...

Description

BIOS251 OL, Week 1 Lab Name: Abigail Powell

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.

Part 1: Complete Labster Homeostatic Control

BIOS251 OL, Week 1 Lab Name: Abigail Powell

Part 2: Report and Reflection Purpose: Describe in your own words and in complete sentences, the purpose of this experiment. To help give you a visual understanding through a virtual lab about the homeostatic process by providing different examples of blood sugar, blood pressure and body temperature. These variables in the simulation help you observe homeostasis in action.

Observations: List 2 observations you have made in this simulation. The simulation used three different variables to see how Phineas body would react. The first of the variables was the air condition being turned on and off. The second variable was intensifying workouts for Phineas. The last variable was providing Phineas with sugary snacks. The simulation asked us question on having to find the sensors decting the stimuli and then the control center processing them and then what decting the effectors. This is how it asked us multiple choice questions after applying different variables throughout the stimulation.

Answer all the questions below:

1. Why is it essential to have maintain homeostasis? (1 point) In order for living organisms to survive they need to maintain homeostasis constantly in order to properly grow and work and most importantly to survive. Maintaing the homesostascis process at each level is key to the overally body 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)

BIOS251 OL, Week 1 Lab Name: Abigail Powell

3. In the simulation, what were the organs involved in homeostatic control? (2 points)

4. Using the figure below identify the abdominopelvic regions (5 points)

BIOS251 OL, Week 1 Lab Name: Abigail Powell

Regions A B

Right hypochondriac region Epigastric region

C

Left hypochondriac

D

Right lumbar region

E

Umbilical region

F

Left lumbar region

G

Right iliac region

H

Hypogastric region

I

Left iliac region

BIOS251 OL, Week 1 Lab Name: Abigail Powell

5. 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? I would like to reflect on a better understanding of a negative and positive feedback loop by adding all the variables and seeing the difermt outcomes to Pheians body. Negative feedback loops work to prevent an excessive response to the stimulus when positive feedback loops serve to intensify a response until an endpoint is reached. A positive feedback loop is a normal physiological process for the body to be activate when needed.

Grading Rubric:

Activity

Deliverable

Points

Part 1

Complete simulation

15

Part 2

Complete lab report and answer questions

15

   

Purpose (1 point) Observation (2 points) Questions (10 points) Reflection (2 points)

BIOS251 OL, Week 1 Lab Name: Abigail Powell

Total

Complete all lab activities

30...