endo. system Flashcards
Function
- chemical signalling by hormones
- regulates how much of each hormone is released
what is a hormone
- a secreted molecule that circulates throughout the body and stimulates specific cells
- produced in glands or tissues and transported via blood, cerebrospinal fluid
posterior pituitary hormones
1.antidiuretic hormone /vasopressin
2.oxytocin
anterior pituitary hormones
1.growth hormone (somatotropin)
2.melanocyte-stimulating hormone (thyrotropin )
3.prolactin
4.adrenocorticotropic hormone (corticotropin)
5.thyroid-stimulating hormone
6.follicle-stimulating hormone
7.luteinizing hormone
follicle-stimulating hormone what is fsh for ?os
required for deceponwnt of ovarian in F and development of sperm in M
luteinizing hormone what is for ?
ovulation ,stimulates the testes to produce testosterone(sperm production and make secondary sexual characteristics)
adrenocorticotropic hormone what is for
stimulates the adrenal cortex to produce corticosteroids hormones
pineal gland
melatonin -light sensitive hormone for biological rhythms related to reproduction and sleep
thyroid gland
-thyroxine (t4) and triiodothyronine (t3)
-growth ,development
-iodine is essential for hormone production
parathyroid glands
-4 glands (2 lower ,2 upper )
-parathyroid hormone -calcium metabolism
thymus gland
-only in vertebrates
-produces hormones speeding up growth and slowing down sexual maturing
-no hormonal function in adults only helps with immunity
pancreas
-digestive,endocrine function
-insulin ,glucagon -regulate blood sugar levels
adrenal gland
-response to stress
medulla :epinephrine (adrenaline ) and norepinephrine (noradrenaline)-antagonist effect
adrenal gland co
corticosteroids:affect metabolism of minerals fat proteins and sugars
ovaries
-estradiol
-progesterone
