What muscle forms the cheek?
A. Orbicularis oculi
B. Zygomaticus
C. Buccinator
D. Orbicularis oris
Answer: C
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The mechanism of gustatory reception seems to parallel that of
A) light receptors. B) mechanoreceptors. C) olfactory receptors. D) nociceptors. E) baroreceptors.
What is found in a Haversian canal?
What will be an ideal response?
Arterial systolic pressure occurs ________ while arterial diastolic pressure occurs ________.
A. during the middle of the phase of ventricular ejection; just before the semilunar valve opens B. during the isovolumetric contraction phase of the cardiac cycle; during the isovolumetric relaxation phase of the cardiac cycle C. when the ventricle reaches end-systolic volume; when the ventricle reaches end-diastolic volume D. at the same time as closure of the semilunar valves; at the same time as closure of the atrioventricular valves E. at the same time as the P-wave of the electrocardiogram; at the same time as the T-wave of the electrocardiogram
Myelin is mostly composed of 20% protein and 80% __________.
Fill in the blank(s) with the appropriate word(s).