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Bio 106 #2 wrong

Bio 106 #2 2.2

QuestionAnswer
Aldosterone targets cells in the proximal convoluted tubule.
Which is TRUE about the juxtaglomerular apparatus? It is composed of parts of the ascending limb of the loop of Henle and the efferent arteriole. It is created by the the junction between the proximal tubule and the afferent arteriole.
Decreased blood colloid osmotic pressure affects renal function by increasing capsular pressure, None of these choices is correct.
Which of the following would cause a decrease in the excretion of Na + and water? increased hydrostatic pressure in the afferent renal arterioles, decreased aldosterone secretion
Angiotensin II is formed from angiotensin I by the action of renin. acts on the collecting ducts to increase reabsorption of water.
Atrial natriuretic hormone causes the formation of concentrated urine. is secreted by the posterior pituitary.
In which region of the nephron does the fractional reabsorption of water vary the most in response to variation in the state of hydration? the glomerulus
In the myogenic mechanism of autoregulation, what is the response to an increase in blood pressure in the afferent arteriole? dilation of the efferent arteriole
Which if these would result in an increase in the osmolarity of urine? ingestion of a large volume of pure water; decreased transport of Na + and Cl - by the ascending limb of the loop of Henle
Which is TRUE about the hormone vasopressin (also known as antidiuretic hormone, ADH)? It is a peptide hormone released from the adrenal gland.
In the condition diabetes mellitus, why does glucose appear in the urine? The rate of tubular secretion of glucose becomes greater than the sum of glucose filtration and reabsorption.
Passage of proteins into Bowman's capsule is prevented by the size of the filtration slits in the podocytes.
Which of the following events would increase filtration pressure? decrease in renal blood flow
Which of the following statements is true? Hormones play a minor role in fluid homeostasis.
The collecting ducts and distal convoluted tubules do not alter their permeability to water.
The kidneys produce renin when sodium chloride concentration in the distal convoluted tubule increases.
Increased secretion of atrial natriuretic hormone results in increased osmolality of the extracellular fluid
Which of the following would be most likely to increase GFR? a decrease in plasma volume
Which correctly describes renin? Its secretion is enhanced by high levels of Na + in the macula densa.
Which of the following statements concerning the process of glomerular filtration is correct? the hydrostatic pressure in glomerular capillaries opposes filtration.
Which correctly describes the composition of the glomerular filtrate? It is identical to urine, but has a much smaller flow rate.
The juxtaglomerular apparatus is composed of podocytes and juxtaglomerular cells.
Which of the following substances undergo renal tubular secretion? Na +
Which of the following statements regarding renal handling of Na + is correct? In the absence of aldosterone, Na + will be secreted by the cortical collecting ducts.
Glucose is usually completely reabsorbed from the filtrate by the time the filtrate has reached the end of the collecting duct.
Which equation is equal to the net glomerular filtration pressure? = hydrostatic pressure in glomerular capillaries + hydrospressure in Bowman's capsule + osmotic pressure due to protein in plasma
Which of the following drugs is least likely to decrease blood pressure? a drug that decreases liver production of angiotensinogen
Autoregulation in the kidney involves changes in the degree of sympathetic stimulation. None of these choices is correct.
Substances that are cotransported into proximal convoluted tubule cells include potassium with amino acids.
Water reabsorption by the renal tubules uses active transport.
What is the rate-limiting (regulated) step for stimulating the secretion of aldosterone? conversion of angiotensin I to angiotensin II in the blood
Which of the following is least likely to be filtered into Bowman's capsule in a normal, healthy person? glucose
Plasma contains a much greater concentration of _____ than the glomerular filtrate. urea
Which of the following is NOT an action of angiotensin II? vasoconstriction of arterioles
The amount of filtrate produced per minute is called the renal fraction.
Which of the following organs is the main site of aldosterone secretion? kidneys
Created by: alexs13
 

 



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