The placenta performs the functions of all of the following systems for the fetus except
a. digestion.
b. respiration.
c. circulation.
d. kidneys.
e. hormone secretion.
C
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All of the following are in the proximal row of carpals except the
A. pisiform. B. scaphoid. C. triquetrum. D. lunate. E. trapezoid.
Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion) is primarily the job of
A. voltage-gated channels. B. sodium-potassium pumps. C. chemically gated channels. D. mechanically gated channels.
Which of the following is isotonic to red blood cells?
A) 0.9% NaCl solution B) 0.9% glucose solution C) Distilled water D) Alcohol
Which features are described as prominent muscular ridges that extend along the inner surface of the right auricle and across the adjacent anterior wall of the right atrium?
A) chordae tendineae B) foramina ovale C) papillary muscles D) pectinate muscles E) trabeculae carneae