Which of the following most accurately describes the actions of aldosterone?
A. Aldosterone increases Na+ reabsorption and K+ secretion in the cortical collecting ducts.
B. Aldosterone increases Na+ reabsorption and K+ secretion in the proximal tubule.
C. Aldosterone increases Na+ secretion and K+ reabsorption in the cortical collecting ducts.
D. Aldosterone increases Na+ secretion and K+ reabsorption in the proximal tubule.
E. Aldosterone decreases Na+ reabsorption and K+ secretion in the cortical collecting ducts.
Answer: A
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Which is not correct regarding nephrons?
A. The renal corpuscle includes the glomerulus and the glomerular capsule. B. The renal tubule is composed of the proximal convoluted tubule, nephron loop, and distal convoluted tubule. C. The nephron is the functional filtration unit in the kidney. D. Eighty-five percent of nephrons are cortical nephrons. E. The renal corpuscle may be located in the renal cortex or renal medulla.
B cells are responsible for
A. cell-mediated immunity. B. antibody-mediated immunity. C. inflammation. D. nonspecific immunity.
The cell-mediated immune response involves the actions of both B and T lymphocytes
Indicate whether the statement is true or false
Kidney stones are primarily composed of
A) cholesterol and esters of other steroid compounds B) crystals and proteins that grow in the renal medulla C) heavy metals that precipitate in the urinary filtrate D) salts of weak acids that serve as buffers in the nephron