endocrine system

Question 1

key features of endocrine system

Answer 1

works along side nervous system to control vital functions through the action of hormones

slower than the nervous system but has widespread and powerful effects

Question 2

glands

Answer 2

key endocrien gland = pituitary,
‘master gland’
located in the brain
controls the release of hormones from all the other endocrine glands in the body

organs that produce hormones

Question 3

hormones

Answer 3

secreted into bloodstream and affect any cell in the body that has a receptor

Question 4

fight or flight response

Answer 4

endocrine system and the autonomic nervous system work together

hypothalamus becomes aware of the stressor and activates the pituitary

sympathetic nervous system is now aroused

adrenaline is released from the adrenal medulla into the bloodstream - this delivers the aroused state causing changes in organs
e.g increased heart rate, dilated pupils

it is immediate and automatic

parasympathetic nervous system - takes over once the threat has passed. returns body to resting rate
decreases heart rate and breathing rate