which is a complex of muscles that encircles the mouth?
a) orbicularis oris
b) mentalis
c) occipiatlis
d) orbicularis oculi
a) orbicularis oris
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The exchange of chloride ions for bicarbonate through tissue capillaries is called the ________.
A. oxygen toxicity B. chloride shift C. acidosis D. Bohr effect
With each ventricular systole,
A) blood pressure remains steady. B) the ventricles fill with blood. C) blood pressure decreases. D) cardiac output decreases. E) blood pressure increases.
A nerve
A. contains a single axon. B. is found only in the CNS. C. carries only sensory information. D. carries information only toward the PNS. E. is a cablelike bundle of parallel axons.
All connective tissues have three features in common. They are
A. cells, hormones, and protein fibers. B. cells, a liquid portion, and protein fibers. C. cells, protein fibers, and ground substance. D. cells, protein fibers, and mucus. E. protein fibers, a liquid portion, and ground substance.