Hypocalcemia stimulates
a decrease in aldosterone production
secretion of parathyroid hormone
secretion of renin
an increase in blood urea nitrogen
vasoconstriction of the afferent arterioles
The Correct Answer is B
A. Decrease in aldosterone production: Aldosterone regulates sodium and potassium levels, not calcium homeostasis.
B. Secretion of parathyroid hormone: PTH is released in response to low calcium levels. It increases calcium reabsorption from bone, the kidneys, and enhances activation of vitamin D to increase calcium absorption in the intestines.
C. Secretion of renin: Renin responds to decreased renal perfusion pressure or sodium levels, not calcium levels.
D. An increase in blood urea nitrogen: This may indicate renal dysfunction or dehydration, but it's not directly related to calcium levels.
E. Vasoconstriction of the afferent arterioles: Occurs in response to sympathetic stimulation or reduced perfusion, not hypocalcemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is E
Explanation
A. The production of nitrogenous wastes: Refers to metabolism, not elimination.
B. Glomerular filtration: An early step in urine formation, but not the act of urinating itself.
C. The countercurrent multiplier process: A mechanism in the nephron loop that concentrates urine, not related to urination.
D. Inflammation of the urinary bladder: Describes cystitis, not micturition.
E. The elimination of urine: Micturition is the process of expelling urine from the bladder through the urethra.
Correct Answer is D
Explanation
A. Seminal vesicle: Located posterior to the bladder; contributes fluid to semen but does not surround the urethra.
B. Urethra: The tube that passes through the prostate; not a gland itself.
C. Bulbourethral gland: Located below the prostate; much smaller in size.
D. Prostate: The prostate gland is about the size of a golf ball, located just below the bladder, and encircles the prostatic urethra.
E. Ejaculatory duct: Passes through the prostate but is not the structure described.
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