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28 Cards in this Set
- Front
- Back
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what are steroids derived from
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cholesterol
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what is unique about steroid transport
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needs carrier proteins
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transthyretin
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thyroid hormones bind to this before binding to albumin
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anterior pituitary origin
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adenohypohesis - oral ectoderm
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posterior pituitary origin
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neurohypohesis - neuro ectoderm of the floor of the third ventricle
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anterior pituitary parts
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pars intermedia, distalis, tuberalis
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posterior pituitary parts
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pars nervosa, median eminance, infundibulum
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5 cell types in pars distalis
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somatotropes, corticotropes, lactotropes, gonadotropes, thyrotropes
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what do somatotropes produce
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growth hormone
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what opposes growth hormone formation
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somatostatin
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what stimulates GH release from somatotropes
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GHRH, ghrellin
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what is secreted by lactotropes
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prolactin
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what stimulates and inhibits lactotropes
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stimulated by VIP and TRH, inhibited by dopamine
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what is released by corticotropes
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ACTH - stimulated by CRH
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what is released by gonadotropes
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FSH, LH - stimulated by GnRH
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Thyrotropes release what
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TSH, stimulated by TRH
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folluciulo-stellate network
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communication between pars tuberalis to pars distalis
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funfact: posterior lobe pituitary is not an endocrine gland, storage site for neuro secretions from the supraoptic and paraventricular nuclei of the hypothalamus
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why did white america assassinate my character?
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what is stored in the posterior pituitary
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ADH and oxycytocin
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what are adh and oxycytocin stored in
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herring bodies
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how does ADH work
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AQP 2 on apical domain and AQP 3 on basolateral, ADH stimulates V2 recepto on basolateral to open and take in water
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oxytocin functions
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relax uterine smooth muscle and relax myoepithelial cells
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oxytocin on lactation
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suckling on nipple causes oxytocin release which relaxes myoepithelial cells to let milk flow
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SIADH
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where you have a dysfunction resulting in the reabsorption of large amounts of water, causes hyponatremia
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what usually happens to people with a destroyed pineal gland
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early onset puberty
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what do parafollicular cells secrete (c cells)
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calcitonin in thyroid
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what do chief cells secrete
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PTH
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review page 762 Histo
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oh yeah
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