Question

The major vein that drains the pelvis is called the:

a) Iliac vein
b) Subclavian vein
c) Azygos vein
d) Brachiocephalic vein

Answer 1

The major vein that drains the pelvis is called the internal iliac vein. It combines with the external iliac vein near the sacroiliac joint to form the common iliac vein, which then becomes the inferior vena cava.

Step-by-step explanation:

The major vein that drains the pelvis is called the internal iliac vein. As the femoral vein penetrates the body wall from the femoral portion of the upper limb, it becomes the external iliac vein, which then combines with the internal iliac vein near the inferior portion of the sacroiliac joint to form the common iliac vein. The common iliac veins come together at the level of L5 to form the inferior vena cava.