Sperm are activated by the secretion from the ________, a doughnut-shaped gland encircling the base of the urethra.
A. prostate gland
B. epididymis
C. bulbourethral gland
D. seminal vesicle
Answer: A
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Why are cyanide compounds lethal to humans?
A. They interfere with nerve impulses. B. They interfere with the production of ATP. C. They interfere with muscle contraction. D. They interfere with protein synthesis. E. All of the choices are correct.
An organ system is
A. a structure composed of several tissue types. B. the basic structural unit of all living organisms. C. a group of organs with a common set of functions. D. a group of cells with similar structure and function. E. a small structure within a cell.
Testosterone promotes closure of the epiphyseal plate
Indicate whether the statement is true or false
A young man is having trouble maintaining his posture after drinking too much at a party. The afferent pathways of the postural reflexes most likely affected in this man is the
A. muscle spindles and temperature receptors. B. cerebellum. C. nociceptors and chemoreceptors. D. vestibular apparatus. E. the somatosensory cortex.