QuestionSBA
QuestionChoice
The ureters receive their blood supply from multiple arteries. The upper or abdominal ureter receives arterial branches from the renal, gonadal and abdominal aorta. The pelvic and distal ureter receives blood from the vesical arteries.
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b
Abdominal aorta alone
QuestionChoice
The ureters receive their blood supply from multiple arteries. The upper or abdominal ureter receives arterial branches from the renal, gonadal and abdominal aorta.
10014328
a
Renal artery, gonadal artery and abdominal aorta
QuestionChoice
The ovarian artery which is a branch of the internal iliac contributes to the blood supply of the distal or pelvic portions of the ureter.
10014332
e
Ovarian artery alone
QuestionChoice
The inferior and superior vesical arteries supply the distal and pelvic portions of the ureters.
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c
Vesical artery alone
QuestionChoice
These contribute to the blood supply received by the upper or abdominal portions of the ureter.
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d
Renal artery alone
Concept
Chapter
## Summary

The ureters are smooth muscle tubes lined by urothelium which arise from the **renal pelvis** and travel through the abdominal and pelvic cavity before ending in two **external ureteric orifices** in the bladder. They transport urine from the kidneys to the urinary bladder.

## Structure

The ureters are lined by **transitional epithelium**, with an external lining of **longitudinal and circular muscle layers**.

## Neurovascular supply

The **abdominal ureter** is supplied by the renal, testicular/ovarian and ureteric arteries from the abdominal aorta. The **pelvic ureter** is supplied by the superior and inferior vesical arteries. The **innervation** of the ureters is derived from the renal plexus and ganglia, ureteric branches from intermesenteric plexus, pelvic splanchnic nerves and the inferior hypogastric plexuses.

## Clinical points

There are three **constrictions** of the ureter that are important to know as they have clinical relevance.

1. *Ureteropelvic junction* - where the ureter meets the pelvis of the kidneys
2. *Pelvic brim* - the edge of the pelvic inlet
3. *Where the ureter enters the bladder*

These are clinically relevant as stones are more likely to become stuck here.
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5007
Ureters
Topic
237
Pelvic Anatomy
15412
Picture
1997
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Topic
237
Pelvic Anatomy
What is the blood supply to annotated structure?

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a