A(n) ________ is a dilated, or enlarged, vein in the walls of the anus or rectum that is usually caused by untreated constipation but occasionally is associated with chronic diarrhea.
A. hemorrhoid
B. ulcer
C. inguinal hernia
D. hiatal hernia
Answer: A
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to stimulate secondary dentin. to cement permanent restorations. to seal dentin tubules. as a base.
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