Blood flows to the brain through the _____ arteries and away from the brain through the _____ vein
a) internal carotid and vertebral; internal jugular
b) external carotid and vertebral; external jugular
c) internal jugular and vertebral; internal carotid
d) internal carotid and axillary; internal jugular
e) external jugular and axillary; external jugular
a
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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.
Nerves that pass through the sympathetic chain without synapsing innervate which structure?
A. Heart B. Stomach C. Sweat glands D. Lungs E. Piloerector muscles
Which structure is supplied by postganglionic fibers originating in the superior mesenteric ganglion?
A. Stomach B. Liver C. Adrenal medulla D. Small intestine E. Rectum
Why is it important to use an antibiotic other than ampicillin in the treatment of bacterial pneumonia?
A. Because antibiotics, such as ampicillin destroy the cell walls of cardiac muscle cells. B. Because antibiotics, such as ampicillin cause the cells lining blood vessels to endocytose bacteria and deposit them in cardiac muscle tissue. C. Because antibiotics, such as ampicillin are not effective in the treatment of bacterial pneumonia. D. Because antibiotics, such as ampicillin destroy the cell walls of bacteria which cause a toxin to be released that will destroy cardiac muscle cells.