The Major Vertebrate Hormones - Protein and Peptide Hormones - Posterior pituitary hormones
3 important questions on The Major Vertebrate Hormones - Protein and Peptide Hormones - Posterior pituitary hormones
How does the suckling reflex work?
Oxytocin is relased into the blood stream due to sensory stimulation of the nipple and travels through the mammary glands. The cells surrounding the milk-collecting lumens of the mammary glands then contract upon exposure to oxytocin, causing milk-letdown.
What does vasoprssin/antidiuretic hormone (ADH) do?
ADH acts to retain water in the tetrapods. Alcohol is a inhibitor of ADH secretion. ADH also has pressor effects during serious blood loss (constriction of blood vessels and slows blood flow (can completely constrict kidney arterioles)).
What two horomes are produced in the posterior pituitary?
Two closely related nonapeptides, oxytocin and vasopressin (together with neurophysin, the carrier protein that also prolongs the half-lives).
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