Each alveolus is surrounded by a web of blood capillaries supplied by the ________
A) inferior vena cava
B) pulmonary artery
C) pulmonary vein
D) superior vena cava
E) aorta
B
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The fetal shortcut from the right atrium to the left atrium is the
A. ductus arteriosus. B. foramen ovale. C. umbilical artery. D. ductus venosus. E. umbilical vein.
The white communicating ramus carries which of the following?
A. Sympathetic postganglionic fibers to the effector organs B. Sympathetic preganglionic fibers to a sympathetic chain ganglion C. Parasympathetic preganglionic fibers from the dorsal root to a spinal nerve D. Sympathetic preganglionic fibers to a spinal nerve E. Sympathetic postganglionic fibers to a spinal nerve
Which of the following is not part of the thoracic wall?
A. Ribs B. Thoracic vertebrae C. Sternum D. Diaphragm
A solution which contains a high concentration of salts relative to the cytosol of a cell is a(n) ________.
A. hypo-osmotic solution B. hypertonic solution C. isotonic solution D. hypotonic solution