Which of the following organs is most likely to suffer permanent damage from shock?
A. the heart
B. the skin
C. the brain
D. the kidneys
Answer: D. the kidneys
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Neuronal axons typically have abundant
A. voltage-gated channels for Na+ that open in response to depolarization. B. ligand-gated channels for K+. C. ligand-gated channels for Na+. D. voltage-gated channels for K+ that open in response to hyperpolarization. E. voltage-gated channels for Ca2+.
Compared to arteries, veins
A) are rounder in a sectional cut. B) have more smooth muscle in their tunica media. C) have a pleated endothelium. D) have thinner walls. E) hold their shape better when cut.
While standing in the anatomical position,
A) front refers to posterior. B) front refers to inferior. C) back refers to anterior. D) back refers to superior. E) back refers to dorsal.
Following ovulation, how long does a secondary oocyte remain viable?
A. Between 3?5 days B. For about 1 day C. For approximately 1 week D. Approximately 12 hours E. For about 1?2 hours