endocrine system Flashcards
1
Q
what is the endocrine system
A
it works alongside the NS
slower transmissions
made up of glands (they secrete hormones)
2
Q
how do hormones travel through the body
A
in the bloodstream
3
Q
3 types of Gland
A
thyroid gland - has role in growth
adrenal glands - fight or flight
pineal glands - sleep
4
Q
what is fight or fight response
A
its evolved as a species for survival benefits
helps deal with short term stresses
5
Q
where does fight or flight happen
A
in peripheral, autonomic branch (involuntary movements)
6
Q
what happens in fight or flight
A
- when theres a threat the hypothalamus (brain) recognises a stressful situation
- sends message to peripheral NS then autonomic NS
- activates sympathetic NS
- sends message to adrenal gland
7
Q
what does the adrenal gland release in fight or flight
A
adrenaline (bloodstream)
noradrenaline (brain)
8
Q
physiological changes from fight or flight
A
- increased HR, blood flow, breathing
- muscles more tense and react quicker
- massive amount of energy ‘
