BIPN 100 Lecture Notes - Lecture 13: Parathyroid Gland, Thyroid, Endocrine Gland
13 Jun 2018
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BIPN 100 Lecture 13
5/2/2018
• ADH and oxytocin are neurohormones made by the PPG
• Released from hypothalamus to APG via portal veins, this hormone tells the APG to
release its own hormone
o
o three reflex pathways with three centers: the hypothalamus, APG, and target
tissues
o tropic hormones are produced by the hypothalamus and APG
• know parathyroid gland, ADH, and oxytocin, thyroid gland
• trophic hormones
o controls the secretion of another hormone
o pathways in which APG hormones ac as trophic hormones are complex
endocrine reflexes
o involves three integrating centers
▪ hypothalamic stimulation from CNS
▪ APG stimulation from hypothalamic trophic hormones
▪ Endocrine gland stimulation from APG trophic hormones, except for
prolactin
o One hormone regulating= short-loop negative feedback trophic hormone
o Two trophic hormones regulating= long-loop negative feedback loop
• Thyroid gland
o Butterfly shape, below the larynx
o Controls metabolism
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