HOMEOSTASIS Flashcards
1
Q
what is homeostasis?
A
maintaining a stable internal environment
2
Q
give an example of homeostasis
A
body temperature, pH levels, blood glucose
3
Q
what is negative feedback?
A
when the body counteracts any changes to bring it back to normal
4
Q
what are the stages of negative feedback?
A
receptor detects stimulus, co-ordination centre, effector produces a response, counteracts the change and brings it back to normal (can take place more than once to fully counteract the change)
5
Q
how does caffeine affect reaction time?
A
it slows it down
6
Q
what are the control variables in the reaction time required practical?
A
the person dropping the ruler, the speed at which the ruler is dropped, the same ruler, the hand that catches it
