Glands of the endocrine system Flashcards
hormones secreted by pineal gland (1)
melatonin
hormones secreted by pitutary gland (9)
GH, TSH, ACTH, FSH, MSH, LH, prolactin, oxytocin, vassopressin
hormones secreted by hypothalmus (6)
TRH, CRH, GHRH, dopamine, somatostatin, vassopressin
hormones secreted by thyroid + parathyroid (4)
T3, T4, calcitonin, PTH
hormones secreted by thymus (1)
thymopoitin
hormones secreted by stomache (5)
gastrin, ghrelin, histamine, somatostatin, neuropeptide Y
hormones secreted by liver (2)
IGF, THPO
hormones secreted by pancreas (3)
insulin, glycagon, somatostatin
hormones secreted by kidneys (3)
calcitriol, renin, erythropoietin
hormones secreted by adrenal gland (4)
androgens, glucocortidoids, adrenaline, non-adrenaline
hormones secreted by ovaries / placenta (2)
oestrogen, progesterone
hormones secreted by uterus (2)
prolactin, relaxin
hormones secreted by testes (3)
androgens, estradoil, inhibin
what regulates the pituitary gland?
neurons and hormones excreted in hypothalamus
structure of pitutary
connected to hypothalmus (in brain) via infundibular, has 2 sections: anterior + posterior pitutary divided by the pans inter media
anterior pitutary
- a pocket of cells
- neuropeptide hormones enter via cappilaries from posterior pituatary and stimulate/inhibit hormone release
- produce TROPHIC hormones (control activity of other galnds + hormone release)
posterior pituatary
- an extention of hypothalamus
- part of NS as axons extend down into it
- produce NEUROPEPTIDE hormones which build up in nerve terminals before release into BS
thyroid gland
- butterfly shaped
- 2 lobes w. thymus connecting anterior to trachea
- produce LIPID-SOULABLE hormones
parathyroid glands
4 small islands embedded on posterior of thyroid gland
adrenal glands
- located at apex of kidneys
- have inner medulla (hormones affect whole body) and outer cortex (release STEROIDS + LIPID-SOULABLE hormones)
pancreas
- exocrine (pancreatic juice into duodeum) + endocrine (hormones of inlets of langerhaus cells)
- langerhaus cells have 3 types: alpha (producing glucogen), beta (producing insulin), delta (producing somatostatin))
what is hyperthyroidism
overactive thyroid resulting in too much T3 + T4 production
what is hypothyroidism
underactive thyroid resulting in not enough T3 + T4 production