Communication and homeostasis Flashcards
1
Q
What is homeostasis?
A
The maintenance of a constant internal environment
2
Q
What is the role of receptors?
A
to detect their specific stimuli
3
Q
What is an effector?
A
A cell that causes a response to a certain stimulus
4
Q
How does cell signalling occur?
A
locally through neurotransmitters or longer distances through the release of hormones, cell-surface-receptors recognise these chemicals and communicate with effectors
5
Q
What are the main two things that homeostasis controls?
A
body temp and blood glucose conc
6
Q
Explain a simple homeostatic system?
A
receptors detect when a level is too high or too low, info is communicated to effectors via either hormonal or nervous system, effectors respond to counteract the change bringing level back to normal. (negative feedback)
