Ureter

Definition

The ureter is a muscular duct that transports urine from the kidneys to the bladder. It plays a crucial role in the urinary system by facilitating the flow of urine.

5 Must Know Facts For Your Next Test

1. Each individual has two ureters, one attached to each kidney.
2. The ureter is lined with transitional epithelium that allows it to stretch as urine passes through.
3. Peristaltic contractions of the ureter's smooth muscle help propel urine toward the bladder.
4. Ureteral infections can lead to conditions such as pyelonephritis, an upper urinary tract infection involving the kidneys.
5. Obstructions in the ureter, like kidney stones, can cause severe pain and require medical intervention.

Review Questions

• What type of epithelium lines the inside of the ureter?
• How does the ureter contribute to urine transport?
• What complications can arise from infections or obstructions in the ureter?

Related terms

Bladder: A muscular sac that stores urine before it is excreted from the body.

Kidney: An organ that filters blood to produce urine.

Transitional Epithelium: A type of tissue lining parts of the urinary system that allows stretching and recoiling.