Enlarged blood vessels of the anal columns are called
A. diarrhea.
B. flatulence.
C. hemorrhoids.
D. peritonitis.
Answer: C
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Which cardiac chamber has the thickest wall?
What will be an ideal response?
The consequences of mutations are invariably harmful.
Answer the following statement true (T) or false (F)
The heart produces a hormone that helps regulate the body's sodium levels and blood pressure.
Answer the following statement true (T) or false (F)