The process of spermatogenesis and spermiogenesis begins with a ________ and ends with four ________.
A. sperm cell; interstitial cells
B. germ cell; gametes
C. sperm cell; nurse cells
D. secondary spermatocyte; germ cells
E. secondary spermatocyte; spermatocytes in general
Answer: B
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Mechanoreceptors that respond to changes in blood pressure are called
A) nociceptors. B) baroreceptors. C) chemoreceptors. D) proprioceptors. E) thermoreceptors.
Neurons that play a major role in the sleep-wake cycle are found in
a. the hypothalamus b. the brain stem c. the cerebellum d. all of the above e. both a and c
After acetylcholinesterase (AChE) acts, the presynaptic neuron:
A) reabsorbs the acetate. B) reabsorbs synaptic vesicles. C) reabsorbs acetylcholine. D) reabsorbs the choline.
Near the external auditory meatus, the long, sharp process called the ________ process is an attachment site for ligaments that support the hyoid bone.
A) mastoid B) styloid C) occipital D) condyloid E) temporal