Which of the following structures found in the skin help prevent water loss and inhibit bacterial growth on the surface of the skin?
a) Arrector pili
b) Lunula
c) Sweat glands
d) Hair follicles
e) Oil glands
Answer: e
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Which is not correct regarding the hypothalamo-hypophyseal portal system?
A. The system is drained by the anterior hypophyseal veins. B. The system is the circulatory connection between the hypothalamus and the posterior pituitary. C. The system carries venous blood. D. The system includes two capillary plexuses. E. The system transports hypothalamic hormones.
The largest structural unit of the body is:
a. an organ system b. an organ c. tissue d. cells
Ascending sensory information is relayed from one nucleus to another in a series of steps, which permits modulation of the response, but this processing takes time. Why is this delay in response not dangerous to the organism?
What will be an ideal response?
Small channels extending through the bone matrix are
A. lacunae. B. lamellae. C. canaliculi. D. periosteum. E. trabeculae.