Question

Which veins supplying the rectum/anus area belong to the portal vs systemic venous system?

a) Superior rectal veins - portal system; Inferior rectal veins - systemic system
b) Superior rectal veins - systemic system; Inferior rectal veins - portal system
c) Middle rectal veins - systemic system; Superior rectal veins - portal system
d) Inferior rectal veins - portal system; Superior rectal veins - systemic system

Answer 1

The superior rectal veins belong to the systemic venous system, while the inferior rectal veins belong to the portal venous system.

Step-by-step explanation:

The veins supplying the rectum/anus area can be categorized into the portal venous system and systemic venous system. In this case, the correct answer is option d) Inferior rectal veins - portal system; Superior rectal veins - systemic system. The superior rectal veins belong to the systemic venous system, while the inferior rectal veins belong to the portal venous system.