Once a follicle releases an egg, it becomes a
A. zona pellucida.
B. corpus albicans.
C. vesicular follicle.
D. corpus luteum.
Answer: D
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A ________ is a problem with one of the tissues producing trophic hormones.
Fill in the blank(s) with the appropriate word(s).
Tubular maximum (Tm)
a. is the maximum amount of a substance that the tubular cells can actively transport within a given time period b. is the maximum rate at which a substance is filtered at the glomerulus c. occurs when the membrane carrier becomes saturated d. is both a and c e. is both b and c
Which of the following statements concerning structures of the spinal cord is false?
A. The ventral root is formed by the axons of neurons in the lateral and anterior horns. B. The ventral root of the spinal cord conveys motor (efferent) nerve impulses away from the spinal cord. C. The dorsal and ventral roots unite to form spinal nerves. D. The posterior horn of the cord contains the cell bodies of motor neurons. E. The dorsal root of the spinal cord conveys sensory (afferent) nerve impulses to the spinal cord.
The function of melanin in the skin is to
A. keep the epidermis soft and pliable. B. reduce water loss. C. prevent infections. D. protect against UV light. E. help regulate body temperature.