the endocrine system works with the nervous system to help coordinate and control the body
it is made up of glands that release chemicals called hormones into the blood stream, which travel around the body until they reach their targetorgan
the target organ has receptors that bind to the hormone molecules which leads to a response by the cell
the endocrine system is made up of glands that release hormones into the blood stream
hormones are chemicals that are released by glands and travel round the bloodstream to a targetorgan, where it causes an effect or response
the target organ is the specific organ that the hormone will cause a response in
the hormones are released from the gland into the blood stream
the hormones make their way to the target organ through the blood stream
the hormones bind to the specific receptor (complementary) which leads to a response by the cell
(if the receptor of the organ was not complementary, there would be no response)
the nervous system is faster than the hormones
the effect of hormones are longer lasting than the nervous system
the nervous system involves electricalimpulses, but hormones dont
the nervous system involves neurones and hormones dont
hormones involve glands and the nervous system doesnt
hormones travel in the bloodstream, but neurotransmitters dont
a fast hormone has a shorter term, usually reversible effect and an example is insulin and adrenaline
a slow hormone has a longer term effect that can be permanent and an example is growth hormones or sex hormones
the pituitary gland produces growth hormone, TSH, FSH, LH and ADH
the growth hormone controls growth in children
TSH stimulates the thyroid gland to make thyroxine to control the rate of metabolism
FSH stimulates the ovaries to mature eggs and make the female sex hormone oestrogen in women
LH stimulates the ovaries to release eggs in women and stimulates the testes to make sperm and the male sex hormone testosterone in men
ADH affects the amount of urine produced by the kidney
the thyroid produces thyroxine, insulin and glucagon
thyroxine controls the metabolicrate of the body
insulin and glucagon control the level of glucose in the blood
the adrenal gland produces adrenaline
adrenaline prepares the body for stressfulsituations and triggers the fight or flight response
the ovaries produce oestrogen
oestrogen controls the development of the female secondary sexual characteristics and is involved in the menstrual cycle
the testes produce testosterone
testosterone controls the development of the male secondary sexual characteristics and is involved in the production of sperm
the pituitary gland can be called the mastergland because it controls the release of many different hormones and it also controls other glands as well. it also produces many other hormones as well.
these hormones in turn act on other glands to stimulate other hormones to be released to bring about effects