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A&P.18.cont.

QuestionAnswer
hypo thalamo hypo physial portal system (like hepatic portal system) hypothalamus secretes "releasing hormones",
which travel in a capillary network to the anterior pituitary through hypophyseal portal veins, which pass downward along the pitutiary stalk and give rise to a capillary net in the anterior pituitary.
hypo thalamic neurons secrete releasing hormones (read page 611)
the portal system carries releasing hormones to the anterior pituitary
is there a portal system to carry to the posterior pituitary no, neurohormones
pituitary gland hypophysis - located at base of brain, where a pituitary stalk attaches to the the hypothalamus
antidiuretic hormone is also called vasopression; it constricts blood vessesl & raises blood pressure
where are antidiuretic (ADH) hormones synthesized neuron cell bodies in the supraoptic nuclei of the hypothalamus
how are antidiuretic (ADH) hormones transported? within the axons of the hypothalamohypophysial tract
how does the body know when ADH hormones are needed? stimuli integrated within the nervous system--osmoreceptors monitor blood osmolality & blood volume
where are ADH molecules released? they are release from axon terminals originating in the hypothalamus and carried to the kidneys
what is the primary target tissue of antidiuretic hormone? kidneys - specifically kidney tubules, which are the sites of urine production
ADH molecules promote the __________ of _______ in the kidney tubules and reduce ___________ ADH molecules promote the retention of water in the kidney tubules and reduce urine volume
Created by: walterina4327
 

 



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