Renal pelvis

Definition

The renal pelvis is the funnel-shaped structure in the kidney that collects urine from the nephrons and channels it into the ureter. It plays a crucial role in urine drainage from the kidney to the bladder.

5 Must Know Facts For Your Next Test

1. The renal pelvis is lined with a mucous membrane and smooth muscle to facilitate urine flow.
2. Hydronephrosis, or swelling of the renal pelvis, can occur due to urinary tract obstructions.
3. Nutrition impacts renal health; high sodium intake can lead to increased pressure on the renal pelvis.
4. Adequate hydration supports proper function of the renal pelvis by aiding in efficient urine transport.
5. Proteins and electrolytes are filtered before they reach the renal pelvis; dietary balance is vital for preventing strain on this structure.

Review Questions

• What is the primary function of the renal pelvis?
• How does nutrition affect the health of the renal pelvis?
• What condition involves swelling of the renal pelvis, and what are potential causes?

Related terms

Nephron: The functional filtering unit of the kidney that removes waste and excess substances from blood.

Ureter: A tube that carries urine from each kidney's renal pelvis to the bladder.

Hydronephrosis: A condition characterized by swelling of one or both kidneys due to urine buildup.