A&P.18.cont.
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| hypo thalamo hypo physial portal system | (like hepatic portal system) hypothalamus secretes "releasing hormones",
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| 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.
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| hypo thalamic neurons secrete releasing hormones | (read page 611)
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| the portal system carries | releasing hormones to the anterior pituitary
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| is there a portal system to carry to the posterior pituitary | no, neurohormones
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| pituitary gland | hypophysis - located at base of brain, where a pituitary stalk attaches to the the hypothalamus
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| antidiuretic hormone is also called | vasopression; it constricts blood vessesl & raises blood pressure
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| where are antidiuretic (ADH) hormones synthesized | neuron cell bodies in the supraoptic nuclei of the hypothalamus
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| how are antidiuretic (ADH) hormones transported? | within the axons of the hypothalamohypophysial tract
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| how does the body know when ADH hormones are needed? | stimuli integrated within the nervous system--osmoreceptors monitor blood osmolality & blood volume
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| where are ADH molecules released? | they are release from axon terminals originating in the hypothalamus and carried to the kidneys
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| what is the primary target tissue of antidiuretic hormone? | kidneys - specifically kidney tubules, which are the sites of urine production
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| 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
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