The endocrine system Flashcards
(21 cards)
what is the endocrine system
a network of glands transporting hormones via blood vessels
endocrine glands produce and secrete…
hormones
hormones are…
chemical substances that regulate the activity of body cells and organs
each gland produces a ??? hormone
different
the endocrine system is regulated by ??? enabling stable ??? of hormones
feedback.
concentrations.
hypothalamus sends a ??? hormone to the ?????? which sends a ??? hormone into the blood stream to the ?????? which then releases its hormone
releasing.
pituitary gland.
stimulating.
target gland.
as a hormone level rises, the hypothalamus…
stops the secretion of releasing and stimulating hormones to make stable concentrations
hormones travel…
in the blood stream to target sites
hormones ??? particular body parts
stimulate
hormones can only affect ?????? that have ??????, when enough ??? are stimulated, the ???_??? is activated
target sites.
specialised receptors.
receptors.
physiological reaction.
pituitary glands produce hormones that…
stimulate other glands to release their hormones
the pituitary gland is controlled by the ??? which receives info from sources about the basic bodily functions then uses it to regulate these functions
hypothalamus
high levels of hormones can ??? the hypothalamus and pituitary glands releasing more hormones, known as ???_???
stop.
negative feedback.
2 parts of the pituitary gland
anterior and posterior
anterior pituitary releases ACTH in response to ???. it stimulates ??? glands to produce ???. it produces FSH and ??? to control ??? and sexual characteristics which stimulates the ??? to produce ??? and progesterone (women) / sperm and ??? in male testes
stress.
adrenal.
cortisol.
LH.
reproduction.
ovaries.
oestrogen.
testosterone.
posterior pituitary releases ??? to stimulate ??? contractions during child birth
oxytocin.
uterus.
adrenal glands are ??? glands found…
2.
on top of the kidneys
2 parts of adrenal glands
outer part adrenal cortex.
inner region adrenal medulla.
difference between adrenal cortex and adrenal medulla hormones
adrenal cortex hormones are necessary for survival, medulla aren’t
adrenal cortex produces ??? which regulates a variety of bodily functions e.g. ???(2). if ??? is low there is low blood ???, poor ??? function and an inability to deal with ???
cortisol. cardiovascular and anti-inflammatory functions. cortisol. pressure. immune. stress.
adrenal medulla releases ??? and ??? which prepare our body for the ??? response. ??? helps the body respond to a ??? by ???(2 examples).
adrenaline.
noradrenaline.
fight or flight.
adrenaline.
threat.
increasing HR and blood flow to muscles/brain, help with conversion of glycogen to glucose for energy.
