In general, sympathetic preganglionic fibers are ________ and postganglionic fibers are ________
A) long; short
B) short; long
C) long; long
D) short; short
Answer: B
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The glossy-white appearance of most axons is due to
A. the high lipid content of the myelin sheath. B. their proximity to light-reflecting cartilage. C. their proximity to white bone. D. the white color of the perivascular feet. E. the covering of ependymal cells.
Which of these variables is most closely regulated by homeostatic reflexes?
a. deliver CO2 to the lungs b. deliver ATP to cells for fuel c. deliver heat to skin to regulate body temp d. deliver O2 to all cells of body e. deliver H2O to all cells f. deliver hormones to all cells -only target cells respond g. deliver glucose to cells for use or storage h. deliver immune cells to sites of
Which type of vessel is constructed only from tunica intima?
A) arteries B) arterioles C) capillaries D) veins E) venules
The amount of air that can be forcibly inhaled after a normal inspiration is the
A. functional residual capacity. B. inspiratory capacity. C. residual volume. D. inspiratory reserve volume.