Chapter 26: Renal Function

Chapter 26: Renal Function

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. The primary selectivity barrier for glomerular filtration is the

ANS:  A

The basement membrane is an important selectivity barrier of the glomerulus, preventing plasma proteins, RBCs, WBCs, and platelets from passing through the glomerulus. Endothelial tight junctions, epithelial fenestra, and mesangial cells are not the primary selectivity barriers for glomerular filtration.

REF:   Pg. 555

2. The glucose transporter in the proximal tubule

ANS:  D

The glucose transporter in the proximal tubule may be saturated at high filtered glucose loads; glycosuria then results. A transport maximum does exist beyond which glycosuria occurs. A sodium-dependent protein co-transporter is needed. The transporter is not ATP-dependent.

REF:   Pgs. 563-564

3. The primary function of the vasa recta is to

ANS:  C

The vasa recta are capillaries that surround the loops of Henle and collecting ducts and absorb interstitial fluid. The vasa recta do not secrete rennin or urea, nor do they reabsorb NaCl.

REF:   Pg. 551

4. Approximately two-thirds of the water and electrolytes filtered by the kidney are reabsorbed by the

ANS:  D

Approximately two-thirds of the water and electrolytes filtered by the kidney are reabsorbed by the proximal tubule. Two-thirds of the water and electrolytes filtered by the kidney are not reabsorbed by the loop of Henle, collecting tubule, or distal tubule.

REF:   Pg. 556