The second heart sound is the result of:
A. opening of the mitral and tricuspid valves
B. closing of the mitral and tricuspid valves
C. opening of the aortic and pulmonic valves
D. closing of the aortic and pulmonic valves
Select your answer:
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Receptors › ViewThe sense of sight detects ________________ stimuli.
A. electromagnetic
B. chemical
C. mechanical
D. temperature
Urinary System › View
Which of the following describes the role of urinary systems in maintaining cellular homeostasis?
A. Urinary systems regulate water balance, pH, and the concentrations of ions in body fluids for cells.
B. Urinary systems are important for the generation of urea, which cells can use as an energy source when carbohydrates become scarce.
C. Urinary systems ensure the delivery of the proper amount of nitrogen to the cells.
D. Urinary systems filter out diseased and damaged cells that can be excreted from the body.