Homeostasis, which is about the response of the body towards certain stimulus have been a favorite. We discuss the effect of warm temperature to the body for a start. Example of question:
Q: Discuss the role of effectors in regulating the body in warm environment.
The key point here is the effectors, so discuss about the effectors only, nothing more!
Diagram above is a typical human response in a warm climate. She is not horny, she's feeling hot -indeed she is! :-p. OK, let's forego our natural reproductive instinct and focus on the question...
First you need to know what is effectors, which are simply muscles & glands.
So, what the effectors for body response towards warm condition? They are 2 effectors involved, as shown below:
1. SWEAT GLANDS (1mark)
- release sweat - cool down body when in evaporates. (1mark)
2. SKIN CAPILLARIES SMOOTH MUSCLE (1mark)
- undergo VASODILATION - blood vessels is ENLARGED - more blood goes to skin - heat is released via skin. (that's why skin becomes red!) (1mark)
TOTAL : 4 MARKS
There you go for the hot one. Later we go for the icy cold one...