The interstitial cells in the testes
A. undergo mitosis to produce primary spermatocytes.
B. support and protect the developing sperm cells.
C. secrete testosterone.
D. convert fructose to glucose to nourish the sperm.
E. form the lining of the seminiferous tubules.
C
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Motility in the small intestines is controlled in part by all of the following except
A) VIP. B) motilin. C) vagus nerve. D) myenteric reflexes. E) gastroenteric reflexes.
Which of the following is not a characteristic of a nonsteroid hormone?
a. Attaches to a receptor on the cell membrane b. Causes protein synthesis to occur c. Can use cAMP as a second messenger d. All of the above are characteristics of a nonsteroid hormone
Development and maintenance of the male body configuration results from the general protein anabolic effect of testosterone
Indicate whether the statement is true or false
If an individual consumes excess calories in the form of carbohydrates, the excess energy is stored as ________.
A. glycogen B. structural carbohydrates C. skeletal muscle D. adipose tissue