Damage to a ________ would result in lack of sympathetic control of the heart.
A. spinal nerve
B. sympathetic nerve
C. cranial nerve
D. splanchnic nerve
Answer: B
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Which muscle(s) of respiration is(are) innervated by the phrenic nerve?
A. Diaphragm B. Innermost intercostals C. External intercostals D. Pectoralis major E. Internal intercostals
A change from Fe2+ to Fe3+ would require a change in the number of ________.
Fill in the blank(s) with the appropriate word(s).
When the pH of body fluids begins to fall, proteins will
A) release a hydrogen from the amino group. B) bind a hydrogen at the amino group. C) release a hydrogen from the carboxyl group. D) bind a hydrogen at the carboxyl group. E) cause none of these actions.
The root of each tooth sits in a bony cavity known as a(n)
A) cement. B) alveolus. C) sulcus. D) buccal. E) ileum.