Multiple Choice Quiz

Please answer all questions


1	Renal pyramids are separated by the
		A)	renal cortex.
		B)	renal medulla.
		C)	renal columns.
		D)	renal pelvis.


2	Blood is supplied to the vasa recta by the
		A)	afferent arterioles.
		B)	arcuate arteries.
		C)	efferent arterioles.
		D)	interlobular arteries.


3	Glomerular filtration
		A)	is increased by increased afferent arteriole diameter.
		B)	is always increased when cardiac output is increased.
		C)	is increased by sympathetic nerve activity.
		D)	produces an ultrafiltrate which is identical in composition to plasma.


4	During the processing of the glomerular ultrafiltrate
		A)	compounds present in excess of the transport maximum for the transport protein will appear in the urine.
		B)	the majority of glucose is reabsorbed by the distal convoluted tubule.
		C)	ADH alters the permeability of all portions of the tubule to water.
		D)	the fluid volume is reduced to 1/2 of its original volume by the proximal convoluted tubule.


5	Which of the following is not true regarding the renal tubule?
		A)	The loop of Henle functions as a countercurrent multiplier.
		B)	The vasa recta functions as a countercurrent multiplier.
		C)	Tight junctions exist between adjacent tubular epithelial cells.
		D)	The reabsorption of Cl^- tends to be passive.


6	Antidiuretic hormone
		A)	is secreted by cells in the hypothalamus.
		B)	is secreted in greater concentrations in response to increased blood volume.
		C)	stimulates an increased urine volume.
		D)	is not secreted in great enough amounts in individuals with diabetes insipidus.


7	Glomerular filtration rate can be determined by calculating renal clearance of
		A)	ammonia.
		B)	inulin.
		C)	para-aminohippuric acid.
		D)	urea.


8	Aldosterone
		A)	stimulates sodium loss and potassium retention.
		B)	is secreted in response to decreased renin.
		C)	is secreted in response to increased blood volume.
		D)	is secreted in response to increased plasma potassium.


9	Which of the following is true regarding renal bicarbonate reabsorption?
		A)	Alkalosis induces increased bicarbonate excretion.
		B)	Bicarbonate is reabsorbed directly by the tubule.
		C)	The majority of reabsorption occurs in the distal convoluted tubule.
		D)	All of the above are true.


10	Carbonic anhydrase inhibitors act primarily on the
		A)	collecting duct.
		B)	distal convoluted tubule.
		C)	loop of Henle.
		D)	proximal convoluted tubule.

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