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22 Cards in this Set

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Major Endorine Glands
pituitary
thyroid
parathyroid
adrenal
isles of langerhans
ovaries
testies
7 of them
organs with non endocrine fx
kidney-renin-bp
Gi-gastrin
placenta
hormone output-directly controlled
by hormone level produced by gland
hormone output-indirectly controlled
by level of substance under hormone control
hormone output-negative feedback
elevated hormone or hormone related substance supressed
hormone receptors
1. target cells or on cell membrane
2. number indirectly related to hormone levels elevated hormones = lowered receptors
classification of hormones
according to structure with no reference to fx b/c fx is very diverse
steroid hormones-fat soluble
1.adrenal cortex- aldosterone &cortisol
2. ovaries- estrogen
3. testies- testosterone
4. thyroid- thyroxin
4 glands & hormones
steroids and transcription
activates, hormone enters nucleus of target cell, acts directly with cell dna, forms hormone
peptide hormones structure
1.short chain of amino acids or large protien
peptide hormone activity
1. bind to receptor on target cell
2. cell then produces intracellular molecules
3. 2nd messengers- exert effect, cAMP & IP3
4. stimulates enzymeactivity which prod. end product
5. phosphodigesterase degrades AMP
peptide hormone fx
stimulates activity of protien in cell based on target cell characteristics
- glycogen - glucose in liver
pituitary gland
1. connected to hypothalamus by infundibulum
2. sits in stella turcia
3. under hypothalamic control
4. has anterior and posterior
hypothalamic control
1.hypothalamus is master orf pituitary
2. it produces regulatory hormones with releasing factors that regulate the release to anteriot pituitary by a portal vein system
3. produces hormones transported by nerve axons to posterior lobe (storage)
anterior lobe-
master gland products regulate release of hormoness by other glands
anterior lobe structure
cords of epithelial cells with granules of stored hormones
ant lobe cell types
sommatotropes-GH
mammotropes- prolactin
thyrotropes-TSH
cortocotropes- ACTH
gonadotropes FSH &LH
GH
stimulates body cell enlargementand long bone growth during formative years-Acromegaly
prolactin
initiates and maintains milk secretion by mammary glands
TSH
thyroid stimulating hormone
stimulates thyriod to synthesize and secrete thyroid hormone
ACTH
stimulates adrenal cortex to manufacture and secrete adrenocortical
FSH & LH
follicle stim. hormone and leutinizing hormone- growth and dev. of gonads and control hormone resp. for sez output