endocrine system

Cards (12)

what are hormones? 
hormones are chemical molecules released directly into the blood
what is the endocrine system?
The endocrine system is composed of glands which secrete chemicals called hormones directly into the bloodstream. The blood carries the hormone to a target organ where it produces an effect. Compared to the nervous system the effects are slower but act for longer
what is the endcorine system made up of?
endocrine glands
where are endocrine glands found?
pituitary gland
thyroid
adrenal gland
pancreas
ovaries
testes
what is the pituarity gland and what does it do?
The pituitary gland in the brain is a ‘master gland’ which secretes several hormones into the blood in response to body conditions. These hormones in turn act on other glands to stimulate other hormones to be released to bring about effects.
where are hormones produced?
endocrine glands
what do hormones control?
things in organs and cells that need constant adjustment
thyroid 
produces thyroxine which is involved in regulating things like rate of metabolism, heart rate and temperature
adrenal gland 
produces adrenaline which is used too prepare body for a fight or flight response
endocrine system  
..
hormones
slower action
act for long time
act in general way
nerves
very fast action
act for very short time
act on very precise area