hormones Flashcards
endocrine glands
groups of cells specialized to secrete hormones
hormones
chemical messengers
how can glands be stimulated?
electrical impulses
change of concentration of a specific substance
target cell
cells with receptors for a certain hormone
target tissue
contains target cells
stimulus to response
stimulus –> receptors –> hormones secreted –> effectors –> response
endocrine system
glands that produce hormones in animals
why do endocrines have a good blood supply?
they need to release hormones into blood quickly
adrenaline source role effect
source: adrenal gland
role: readies body for fight or flight response
effect: increases heart and breathing rate; increase muscle blood flow
verengen (von Blutgefäßen)
to constrict
where are adrenal glands found
above kidneys
hormones secreted by cortex and cause
steroid hormones
- breakdown of proteins and fat into glucose
- increasing blood volume and pressure
- suppressing of immune system
hormones secreted by medulla and cause
catecholamine hormones
- increase in heart and breathing rate
- glycogen –> glucose
- constricting blood vessels
steroid hormones
cortisol & aldosterone
catecholamine hormones
adrenalin & noradrenaline