Question

What is homeostasis ? Draw a simple labelled diagram and briefly explain what are the components required in a generic homeostatic system?
N.B. You may draw this diagram by hand or draw directly on the computer. Please do not copy-paste images from the web or textbooks. A rough sketch is satisfactory; does not necessarily need to be coloured or of printable quality.

Answer 1

Homeostasis is the ability to maintain a relatively stable internal state that persists despite changes in the world outside.The greek word means similar and stasis means stability.The human body regulates its internal concentration of hydrogen,calcium,potassium and sodium which are required for normal functioning of the body.

When body temperature rises the thermoreceptors in the skin and brain sound an alarm,initiating a chain reaction that directs to production of sweat and flush

Components of homeostatic system

Change

It is anything that the cell requires to react,such as change in temperature,pressure or chemical composition inside

Receptor

Once the change is made ,its its receptors job to alert the control center to counter act it

Control center

As the control center receives impulses from its receptors it sends commands to the effector to counteract the change in the environment

Effector

The effector acts on the impulses from its specific command center,counteracts the change and returns the environment to balanced state.