endocrine system Flashcards
what is the endocrine system made up of
series of hormone glands that produce hormones
defenition of hormones
chemical messengers of the body
what receives hormones
bloodstream and carries them to their particular organ
how many parts of the endocrine system are there
6
what are the 7 bits of the system
1 - pituitary gland in hypothalamus
2 - thyroid gland
3 - thymus
4 - adrenal gland in kidneys
5-pancreas
6 - gonads
what are gonads
the sex organs - ovaries and testes
function of pituitary gland
receives signal from hypothalamus
has 2 lobes - anteriror / posterior lobe
function of thyroid gland
secretes 2 main hormones
controls growth, reproduction, development and metabolism
function of pancreas
helps regulate blood glucose conc
what does pancrease produce
glucagon + insulin
function of ovaries
produces + releases oestrogen
responsible for female sex charecteristics
function of testes
produces + releases testestrone
responsible for male sex charecteristics
what are the 2 parts of adrenal glands
cortex
medula
function of adrenal glands
produces hormones in response to stress
regulates blood pressure, glucose metabolism, body salts and water balance
why is pancreas a unique organ
has a exocrine and endocrine gland
what enzyme does exocrine gland release in pancreas
digestive
what does endocrine gland release in pancrease
hormone producing
what does exocrine gland in pancreas do?
extretes enzymes to break down proteins, lipids, carbohydrates + nucleic acids in food
what does endocrine gland in pancreas do?
secreates insulin hormone and glucagon to control blood sugar levels throughout the day
where can you find the islets of langerhans
in the pancreas
what extra important bits are in the pancreas
islets of langerhans
what are the islets of langerhans made of
endocrine tissue
what type of cells are inside the islets of langerhans
alpha
beta
delta
what does beta cells produce
insulin
what is the function of insulin
promotes the uptake and metabolism of glucose
what do alpha cells produce in the islets of langerhans
glucagon
