What inhibits viruses from entering and attacking healthy cells?
A) membrane-attack complexes (MAC)
B) keratin
C) interferons
D) pyrogens
E) complement
C
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Kidney shrinkage with age is due to
A. loss of glomeruli. B. spooling of collecting ducts. C. proliferating nephron loops. D. merging of proximal and distal convoluted tubules.
The muscles between the ribs are called the ________________________________________ muscles
Fill in the blank(s) with correct word
The vertebral processes that are most easily palpated along the midline of the back are the ________ processes.
A. lamellar B. inferior articular C. transverse D. spinous E. superior articular
Which of the following is not true of parietal cells?
A) They contain carbonic anhydrase that converts carbon dioxide and water into carbonic acid. B) They produce bicarbonate by dissociation of carbonic acid. C) They import chloride ions from the interstitial fluid to produce hydrochloric acid in the gastric glands. D) They release bicarbonate into the lumen of gastric glands. E) They release bicarbonate into the interstitial fluid that then enters the bloodstream.