BIOS 251 Week 1 Lab Homeostatic Control How does the human body keep itself in balance
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
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 is to help me understand what homeostasis is, how
important homeostasis to our body, and what we need to know in order to maintain body
equilibrium. In other words, Homeostasis acts as the body’s defensive mechanism. In this