Reflux of gastric contents into the esophagus occurs because of
A. increased amounts of mucus produced by the stomach.
B. increased hydrochloric acid production by the parietal cells.
C. relaxation of the cardiac sphincter.
D. spasms of the submucosal layer of the stomach wall.
E. contraction of the pyloric sphincter.
Answer: C
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A) autoimmune disease. B) aplastic anemia. C) drug resistance. D) thrombocytopenia. E) erythroblastosis.
In the diagram, where is a node of Ranvier?
a) A b) B c) C d) D e) E
A/an ____________ is a diagnostic evaluation of the number of white blood cell types per cubic millimeter of blood
Fill in the blank(s) with correct word
The term "flagellum" is appropriate for the structure it represents because it means
A. the center. B. a whip. C. a nut or kernel. D. a bench. E. an eyelid.