Hilum

Definition

The hilum is a recessed area of an organ where structures such as blood vessels, nerves, and ducts enter or exit. In the kidney, the hilum serves as the entry and exit point for renal arteries, veins, and ureters.

5 Must Know Facts For Your Next Test

1. 1. The renal artery enters the kidney at the hilum.
2. 2. The renal vein exits the kidney through the hilum.
3. 3. The ureter also connects to the kidney at the hilum.
4. 4. The hilum is located on the concave surface of each kidney.
5. 5. It is essential for the transportation of blood and urine to and from the kidneys.

Review Questions

• 1. What major structures enter and leave the kidney through the hilum?
• 2. Where is the hilum located on each kidney?
• 3. Why is the hilum important for kidney function?

Related terms

Renal Artery: A blood vessel that carries oxygenated blood from the heart to the kidneys

Ureter: A tube that carries urine from the kidneys to the bladder

Renal Vein: A blood vessel that carries deoxygenated blood away from the kidneys