Calyces

Definition

Calyces are the chambers in the kidney where urine collects before moving to the renal pelvis. They play a crucial role in funneling urine from the nephrons toward the ureter.

5 Must Know Facts For Your Next Test

1. Calyces are divided into minor and major calyces.
2. Minor calyces receive urine from the renal papillae of each renal pyramid.
3. Major calyces form when several minor calyces merge together.
4. The calyces are lined with transitional epithelium, which is specialized for stretching.
5. Blockage or infection of the calyces can lead to conditions such as hydronephrosis or pyelonephritis.

Review Questions

• What are the two types of calyces found in the kidney?
• How do minor and major calyces differ in their function?
• What type of epithelium lines the calyces and why is this important?

Related terms

renal pelvis:

The funnel-shaped structure that collects urine from the major calyces and channels it into the ureter.

nephrons:

The functional units of the kidney responsible for filtering blood and forming urine.

renal papillae: The tips of renal pyramids that release urine into the minor calyces.