Iliolumbar vein
Encyclopedia
The iliolumbar vein is the vena comitans
of the iliolumbar artery
.
The obturator nerve
crosses superficial to it.
A single vein is found more commonly than a double vein.
It drains vertebral segments four and five.
It is closely related to the ascending lumbar vein
.
Vena comitans
Vena comitans is Latin for accompanying vein. It refers to a vein that is usually paired, with both veins lying on the sides of an artery. They are found in close proximity to arteries so that the pulsations of the artery aid venous return. Because they are generally found in pairs, they are...
of the iliolumbar artery
Iliolumbar artery
The iliolumbar artery is the first branch of the posterior trunk of the internal iliac artery.-Course:The iliolumbar artery turns upward behind the obturator nerve and the external iliac artery and vein, to the medial border of the psoas major, behind which it divides into:* Lumbar branch of...
.
The obturator nerve
Obturator nerve
The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves; the branch from the third is the largest, while that from the second is often very small.-Path:...
crosses superficial to it.
A single vein is found more commonly than a double vein.
It drains vertebral segments four and five.
It is closely related to the ascending lumbar vein
Ascending lumbar vein
The ascending lumbar vein is a vein that runs up through the lumbar region on the side of the vertebral column.-Structure:The ascending lumbar vein is a paired structure...
.