fight or flight response Flashcards
describe the fight or flight response
when a mammal is threatened it responds with automatic responses which are triggered to prepare the body for action
what is the threat detected by?
receptors
sensory neurones carry nerve impulses to ….
the hypothalamus
what is activated by the hypothalamus?
sympathetic nervous system and endocrine system
the SNS uses …… pathways to initiate body reactions
neuronal
what system uses hormones in the bloodstream?
adrenal cortical
what is the role of the autonomic nervous system?
detects a threat
what is the role of the sympathetic nervous system?
transmits impulses in the adrenal cortical system
which hormones are released by adrenal glands?
adrenaline & noradrenaline
what is the role of adrenaline during fight or flight?
triggers and stimulates hypothalamus which releases adrenocorticotropic hormones from the pituitary gland
describe adrenaline action when blood glucose is decreased
adrenaline is secreted from adrenal glands
describe adrenaline action when blood glucose is increased
adrenaline attaches to receptors which activates the G protein, converting ATP to cAMP
how does cAMP activate as a second messenger model
activates the enzyme to hydrolyse glycogen to glucose
