The pitch of a sound wave is related to its
A) amplitude.
B) frequency.
C) decibels.
D) duration.
B) frequency.
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Systemic vascular resistance is the resistance to blood flow within all the blood vessels, EXCEPT the:
A. cerebral vessels. B. pulmonary vessels. C. coronary vessels. D. mesenteric vessels.
If the axon of a neuron was severed, this would likely hinder its ability to ________.
A. send signals B. synthesize proteins C. remove metabolic wastes D. receive signals
The structure of a testis is composed of
A) semen in various stages of development held in seminiferous tubules. B) a single very long seminiferous tubule that winds through the structure. C) 1 to 4 lobules, each of which contains about 250 seminiferous tubules. D) about 250 lobules, each of which contains 1 to 4 seminiferous tubules.
Of the following muscles of the head, which one wraps around the orbits?
A. Orbicularis oculi B. Orbicularis oris C. Temporalis D. Nasalis E. Masseter