BIOL 3324 Exam IV Practice Q's
The loops of Henle are considered to function as a countercurrent multiplier because - Answer-as urine
flows in the loop, a concentration gradient is established in the medulla
Which of the following factors would decrease the glomerular filtration rate? - Answer-an obstruction
such as a kidney stone in the tubular system, which increases Bowman's capsule hydrostatic pressure
Aldosterone - Answer-stimulates Na+ reabsorption in the distal and collecting tubules.
stimulates K+ secretion in the distal tubule
Vasopressin - Answer-Induces the kidney to produce a small volume of concentrated urine.
Is stimulated when the body fluids are hypertonic
The descending limb of the loop of Henle of a juxtamedullary nephron - Answer-is permeable to water
The ascending limb of the loop of Henle is where - Answer-NaCl is actively transported into the
interstitial fluid leaving water behind because the tubular cells are not permeable to water even in the
presence of vasopressin
In the tubular segments permeable to water, solute reabsorption is always accompanied by comparable
water reabsorption - Answer-True
The driving force of water reabsorption across all permeable segments of the kidney tubule is an
osmotic gradient - Answer-True
The loops of Henle are considered to function as a countercurrent multiplier because - Answer-as urine
flows in the loop, a concentration gradient is established in the medulla
Which of the following factors would decrease the glomerular filtration rate? - Answer-an obstruction
such as a kidney stone in the tubular system, which increases Bowman's capsule hydrostatic pressure
Aldosterone - Answer-stimulates Na+ reabsorption in the distal and collecting tubules.
stimulates K+ secretion in the distal tubule
Vasopressin - Answer-Induces the kidney to produce a small volume of concentrated urine.
Is stimulated when the body fluids are hypertonic
The descending limb of the loop of Henle of a juxtamedullary nephron - Answer-is permeable to water
The ascending limb of the loop of Henle is where - Answer-NaCl is actively transported into the
interstitial fluid leaving water behind because the tubular cells are not permeable to water even in the
presence of vasopressin
In the tubular segments permeable to water, solute reabsorption is always accompanied by comparable
water reabsorption - Answer-True
The driving force of water reabsorption across all permeable segments of the kidney tubule is an
osmotic gradient - Answer-True
