Axons of the corticospinal tract cross the brainstem at the

A.  middle cerebellar peduncle of the pons.
B.  decussation of the pyramids in the medulla oblongata.
C.  primary fissure of the cerebellum.
D.  cerebral aqueduct of the midbrain.
E.  hypoglossal canal.


B

Anatomy & Physiology

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In the heat of the summer, up to __________________________________ air exchanges per hour may be needed to maintain appropriate ventilation

Fill in the blank(s) with correct word

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Blood leaves the right ventricle through the ________ valve to reach the capillaries supplying the lungs.

A) aortic B) mitral C) pulmonary D) tricuspid E) bicuspid

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An increase in end diastolic volume would have which effect on cardiac output?

A. Increase B. Decrease C. No effect D. Varies from person to person

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Which of the following is NOT a major job of the digestive system?

A) acid-base homeostasis B) fluid and electrolyte homeostasis C) manufacturing blood cells D) ingestion of vitamins and minerals

Anatomy & Physiology