The base of the heart is its ______ surface. a. diaphragmatic b. superior c. anterior d. inferior In comparing a parallel artery and vein, you would find that a. the artery wall is thicker. b. the...

The base of the heart is its ______ surface.

a. diaphragmatic

b. superior

c. anterior

d. inferior

In comparing a parallel artery and vein, you would find that

a. the artery wall is thicker.

b. the artery diameter is greater.

c. the artery lumen is smaller.

d. the artery endothelium is thicker.