|||\\\
NU 545 Unit 3 exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
know which hormones are water-soluble and which are lipid-soluble - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔water soluble: |||\\\ |||\\\
peptides- GH, insulin, leptin, PTH, prolactin |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
glycoproteins- FSH, LH, TSH |||\\\ |||\\\ |||\\\
polypeptides: adrenocorticotropic hormone, ADH, calcitonin, endorphins, glucagon, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
hypothalamic hormones, lipotropins, melanocyte-stimulating hormone, oxytocin, somatostatin, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
thymosin, thyrotropin-releasing hormone
|||\\\ |||\\\ |||\\\
amines: Epi, Norepi |||\\\ |||\\\
lipid soluble: |||\\\ |||\\\
Thyroxine: T3 and T4 |||\\\ |||\\\ |||\\\
steroids: Estrogen, glucocorticoids, mineralocorticoids, progestin, testosterone (all steroids are
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cholesterol based) |||\\\
derivatives of arachidonic acid (autocrine or paracrine action): |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Leukotrienes, Prostacyclins, prostaglandins, thromboxanes |||\\\ |||\\\ |||\\\
How are water-soluble hormones transported? - correct answer✔✔Water-soluble hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
are proteins that are polarized with a high molecular weight. Because they cannot diffuse
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
across the lipid cell plasma membrane, they must interact or bind with receptors in or on the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cell membrane to activate a second-messenger to mediate short-acting responses.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
,|||\\\
How are lipid-soluble hormones transported? - correct answer✔✔Lipid-soluble hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
diffuse freely across the cell and nuclear membrane and bind with cytosolic or nuclear
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
receptors. (can also bind with receptors in or on the plasma membrane) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
know how protein hormones are transported in the blood - correct answer✔✔peptide or
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
protein hormones are water-soluble and circulate in free (unbound) forms
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
why do water soluble hormones have a short half-life? - correct answer✔✔because they are
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
catabolized by circulating enzymes. Remember they are unbound. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How long can lipid-soluble hormones remain in the blood? - correct answer✔✔For hours to
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
days. They last longer in the blood because they are bound to carrier/transport proteins.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
only free hormones can do what? - correct answer✔✔initiate changes within a target cell
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How does the concentration of binding proteins affect the concentration of free hormones in
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the plasma? - correct answer✔✔because equilibrium exists between the concentration of free
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
hormones and hormones bound to plasma proteins
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What are the two main functions of the target cell hormone receptor? - correct answer✔✔1.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
To recognize and bind with high affinity to their particular hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
2. To initiate a signal to appropriate intracellular effectors
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
*when a hormone is released into the circulatory system, it is distributed throughout the body,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
but only those cells with appropriate hormone receptors for that hormone are affected.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what is oxytocin? - correct answer✔✔a polypeptide hormone synthesized in the supraoptic
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
and paraventricular nuclei of the hypothalamus. Oxytocin is implicated in behavior responses,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, |||\\\
especially in women. Oxytocin plays a role in brain responsiveness to stressful stimuli, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
especially in the pregnant and postpartum states. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How does oxytocin relate to the pituitary gland? - correct answer✔✔the posterior pituitary
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stores and secretes oxytocin. |||\\\ |||\\\ |||\\\
Once synthesized, oxytocin is packaged in secretory vesicles along with its neurophysin and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
moved down the axons of the pituitary stalk to the pars nervosa for storage.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Release of oxytocin is mediated by what? - correct answer✔✔cholinergic and adrenergic
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
neurotransmitters. the major stimulus for release is glutamate. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where is oxytocin secreted and what are its effects? - correct answer✔✔it is secreted from
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the posterior pituitary. Oxytocin is responsible for the contraction of the uterus and milk
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
ejection in lactating women and may affect sperm motility in men. Oxytocin is released in
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
response to suckling (oxytocin binds to receptors on myoepithelial cells in the mammary tissue
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
and cause contraction causing milk expression or let down reflex) and distention of the uterus
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(oxytocin stimulates contractions with a positive feedback loop). |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where is ADH secreted? - correct answer✔✔ADH is produced in the hypothalmus and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
secreted by the posterior pituitary. ADH and the posterior pituitary regulate osmolality.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where does ADH act? - correct answer✔✔ADH acts on vasopressin (V2) receptors of the renal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
tubular cells to increase their permeability, which leads to increased water absorption in the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
blood stream, increasing the concentration of urine and reducing serum osmolality.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what causes ADH to be secreted? - correct answer✔✔when plasma osmolality increases, the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
osmoreceptors of the hypothalamus are stimulated- the rate of ADH secretion is increased |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
causing more water to be absorbed by the kidneys- the plasma osmolality returns to its set
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
point (280 mOsm/kg) |||\\\ |||\\\
NU 545 Unit 3 exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
know which hormones are water-soluble and which are lipid-soluble - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔water soluble: |||\\\ |||\\\
peptides- GH, insulin, leptin, PTH, prolactin |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
glycoproteins- FSH, LH, TSH |||\\\ |||\\\ |||\\\
polypeptides: adrenocorticotropic hormone, ADH, calcitonin, endorphins, glucagon, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
hypothalamic hormones, lipotropins, melanocyte-stimulating hormone, oxytocin, somatostatin, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
thymosin, thyrotropin-releasing hormone
|||\\\ |||\\\ |||\\\
amines: Epi, Norepi |||\\\ |||\\\
lipid soluble: |||\\\ |||\\\
Thyroxine: T3 and T4 |||\\\ |||\\\ |||\\\
steroids: Estrogen, glucocorticoids, mineralocorticoids, progestin, testosterone (all steroids are
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cholesterol based) |||\\\
derivatives of arachidonic acid (autocrine or paracrine action): |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Leukotrienes, Prostacyclins, prostaglandins, thromboxanes |||\\\ |||\\\ |||\\\
How are water-soluble hormones transported? - correct answer✔✔Water-soluble hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
are proteins that are polarized with a high molecular weight. Because they cannot diffuse
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
across the lipid cell plasma membrane, they must interact or bind with receptors in or on the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cell membrane to activate a second-messenger to mediate short-acting responses.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
,|||\\\
How are lipid-soluble hormones transported? - correct answer✔✔Lipid-soluble hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
diffuse freely across the cell and nuclear membrane and bind with cytosolic or nuclear
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
receptors. (can also bind with receptors in or on the plasma membrane) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
know how protein hormones are transported in the blood - correct answer✔✔peptide or
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
protein hormones are water-soluble and circulate in free (unbound) forms
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
why do water soluble hormones have a short half-life? - correct answer✔✔because they are
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
catabolized by circulating enzymes. Remember they are unbound. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How long can lipid-soluble hormones remain in the blood? - correct answer✔✔For hours to
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
days. They last longer in the blood because they are bound to carrier/transport proteins.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
only free hormones can do what? - correct answer✔✔initiate changes within a target cell
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How does the concentration of binding proteins affect the concentration of free hormones in
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the plasma? - correct answer✔✔because equilibrium exists between the concentration of free
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
hormones and hormones bound to plasma proteins
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What are the two main functions of the target cell hormone receptor? - correct answer✔✔1.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
To recognize and bind with high affinity to their particular hormones
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
2. To initiate a signal to appropriate intracellular effectors
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
*when a hormone is released into the circulatory system, it is distributed throughout the body,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
but only those cells with appropriate hormone receptors for that hormone are affected.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what is oxytocin? - correct answer✔✔a polypeptide hormone synthesized in the supraoptic
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
and paraventricular nuclei of the hypothalamus. Oxytocin is implicated in behavior responses,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, |||\\\
especially in women. Oxytocin plays a role in brain responsiveness to stressful stimuli, |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
especially in the pregnant and postpartum states. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How does oxytocin relate to the pituitary gland? - correct answer✔✔the posterior pituitary
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stores and secretes oxytocin. |||\\\ |||\\\ |||\\\
Once synthesized, oxytocin is packaged in secretory vesicles along with its neurophysin and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
moved down the axons of the pituitary stalk to the pars nervosa for storage.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Release of oxytocin is mediated by what? - correct answer✔✔cholinergic and adrenergic
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
neurotransmitters. the major stimulus for release is glutamate. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where is oxytocin secreted and what are its effects? - correct answer✔✔it is secreted from
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the posterior pituitary. Oxytocin is responsible for the contraction of the uterus and milk
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
ejection in lactating women and may affect sperm motility in men. Oxytocin is released in
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
response to suckling (oxytocin binds to receptors on myoepithelial cells in the mammary tissue
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
and cause contraction causing milk expression or let down reflex) and distention of the uterus
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
(oxytocin stimulates contractions with a positive feedback loop). |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where is ADH secreted? - correct answer✔✔ADH is produced in the hypothalmus and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
secreted by the posterior pituitary. ADH and the posterior pituitary regulate osmolality.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where does ADH act? - correct answer✔✔ADH acts on vasopressin (V2) receptors of the renal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
tubular cells to increase their permeability, which leads to increased water absorption in the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
blood stream, increasing the concentration of urine and reducing serum osmolality.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what causes ADH to be secreted? - correct answer✔✔when plasma osmolality increases, the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
osmoreceptors of the hypothalamus are stimulated- the rate of ADH secretion is increased |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
causing more water to be absorbed by the kidneys- the plasma osmolality returns to its set
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
point (280 mOsm/kg) |||\\\ |||\\\
