The lower part of the large intestine including the rectum receives blood from the
A) celiac trunk.
B) inferior mesenteric artery.
C) internal iliac artery.
D) abdominal aorta.
E) external iliac artery.
Question 2
The extraembryonic membrane that forms blood is the
A) yolk sac.
B) amnion.
C) allantois.
D) chorion.
E) decidua.