Science Quiz / Fluid Balance and Endocrine Regulation

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Can you name the HYTQ?

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QuestionAnswer
True or False: The secretion of ANP is controlled by activation of stretch receptors in the atria of the heart.
Where is angiotensin converting enzyme found?
True or False: The macula densa cells detect a decrease in Na filtration then through a paracrine mechanism renin is released by the JG cells.
What type of catecholamine receptors are located on JG cells promoting renin secretion?
True or False: angiotensin can act at sympathetic nervous system to inhibit the release of norepinephrine.
Where is renin made?
What organ is really important for the regulation of Na and Water levels?
Information from the left atria, aortic arch, and carotid sinus is detected baroreceptors and sent to the brainstem via which two nerves?
True or False: Thirst is activated by shrinkage of osmoreceptors in the brain.
caused by inadequate synthesis or release of ADH due to a head injury or brain tumor. It results in large volumes of urine.
Total volume of Body Water (L)
The osmoreceptors in the brain project to which 2 nuclei of the hypothalamus?
What natriuretic peptide is made by atrial myocytes?
enzyme responsible for converting angiotensin I to angiotensin II
True or False: The V2 receptor activates adenylyl cyclase, increasing cAMP levels, activating protein kinase A, which activates aquaporin 2 channels at the collecting duct of the k
The actions of ANP and BNP primarily oppose the affects of what hormone?
with a ____ in water intake, osmolality increases
When sodium is ingested, what happens to the osmolality of the body's fluids?
What is ANP and BNP's affect on blood vessels?
angiotensinogen is made in the _____.
known biomarker of heart failure
major sites of action for aldosterone in the kidney (2 places)
angiotensin II acts at the zona glomerulosa of the adrenal cortex to produce what hormone?
a decrease in blood volume as detected by the baroreceptors of the kidney cause the release of what hormone?
angiotensin II acts in the brain by using the ______ organs to bypass the blood brain barrier.
primary control point for the production of angiotensin II
True or False: Aldosterone acts to increase water excretion.
QuestionAnswer
Which ADH receptor is responsible for its actions on the kidney?
What are the 2 natriuretic peptides?
Where in the kidney does ADH act to increase water resorption?
Receptor for ANP and BNP
an increase in water intake causes a _____ in osmolality
Which ADH receptors are found in the arterioles?
True or False: angiotensin II is a negative feedback regulator of renin secretion.
True or False: ANP and BNP promote Na excretion and water excretion.
True or False: Angiotensin II can act in the brain to increase water and sodium intake.
True or False: ADH increases urine volume.
When plasma is hyposmolar, Is urine volume increased or decreased?
Where are the brain osmoreceptors located?
cells in the brain that detect changes in osmolality of the extracellular fluid
True or False: The parasymapthetic nervous system is involved in promoting the secretion of renin.
When osmolality ____, cells in the body shrink
What is angiotensin II affect on blood vessels?
What natriuretic peptide is made by ventricular myocytes?
What hormone is released by the adrenal cortex can act on the liver stimulating angiotensinogen?
Angiotensin II binds to what receptor on the JG cells to inhibit renin secretion?
pathological problem that occurs when kidney fails to respond to ADH due to defective V2 receptors or aquaporin 2. causes production of large volumes of urine with normal levels of
Where in the kidney does angiotensin II act to increase water and sodium intake?
True or False: Aldosterone acts at the collecting duct and distal tubule of the kidney to promote reabsorption of Na and Cl.
shrinkage of osmoreceptors due to a decrease in water intake (hyperosmolar) activates the neurons in the SO and PVN nuclei of the hypothalamus to induce secretion of what hormone?
with a decrease in osmolalilty, cell in the body shrink or swell?
Swelling of osmoreceptors inactivates neurons in the SO and PVN nuclei decreasing or inhibiting synthesis and release of ADH at the posterior pituitary.
Where are the 2 natriuretic peptides made?
true or false: angiotensin II is produced in the blood.

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