Why would an elderly person be more prone to skin infections than a younger person?
A) Skin repairs take longer in the elderly.
B) The epidermis is thinner in the elderly.
C) There are fewer dendritic cells in the skin of the elderly.
D) All of the answers are correct.
Answer: D
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Spongy bone
A. contains no osteocytes. B. has spaces filled with yellow marrow. C. is composed of tubular units called osteons. D. forms diploe in the cranial bones. E. All of the choices are correct.
If a stimulating electrode is placed in the middle of a resting axon and an above-threshold voltage is applied to the electrode action potentials
A) will start at that point and travel in both directions in the axon. B) will start at that point and proceed only toward the axon terminal. C) will not occur. D) will start at that point and proceed only toward the cell body.
A cranial nerve with only sensory fibers is the ________.
A. vagus nerve B. trigeminal nerve C. hypoglossal nerve D. optic nerve
Lipids are transported to the surface of the intestinal absorptive cells by ________, and are then processed into ________
A) fat droplets; chylomicrons B) fat droplets; micelles C) fat globules; micelles D) micelles; fat globules E) micelles; chylomicrons