Compared to arteries, veins A) are rounder in a sectional cut. ...

[armygirl]

Compared to arteries, veins
 A) are rounder in a sectional cut.
  B) have more smooth muscle in their tunica media.
  C) have a pleated endothelium.
  D) have thinner walls.
  E) hold their shape better when cut.

Question 2

Kevin has been experiencing difficulty urinating now that he is over the age of 60. The doctor examines his prostate gland and finds no evidence of inflammation. Furthermore, Kevin's PSA test is normal. It is most likely that Kevin is suffering from
 A) impotence.
  B) prostate cancer.
  C) benign prostatic hypertrophy.
  D) prostatitis.
  E) male climacteric.

[verrinzo]

Answer to Question 1

D

Answer to Question 2

C