section 3: animal responses - topic 2: fight or flight response & heart rate Flashcards
1
Q
what is the ‘fight or flight’ response?
A
how an organism responds to feeling threatened by preparing its body for action.
2
Q
what is the pituitary gland stimulated to release?
A
a hormone called ACTH.
3
Q
what does the release of ACTH cause?
A
the cortex of the adrenal gland to release steroidal hormones.
4
Q
which nervous system is activated?
A
the sympathetic.
5
Q
what does the activation of the SNS trigger?
A
the release of adrenaline from the medulla region of the adrenal gland.
6
Q
what are the effects of the SNS & adrenaline?
A
heart rate is increased & heart contracts with more force - causing blood to be pumped around the body faster.
