The ureters
A) are lined by stratified squamous epithelium.
B) contain only an inner circular layer in their muscularis.
C) do not have an adventitia layer.
D) have a muscularis layer that is stimulated to contract by the stretching of their walls as urine enters them.

Question

Quizplus · Accepted Answer

The muscularis layer of the ureters has both inner circular and outer longitudinal layers. This layer is stimulated to contract by the stretching of the walls as urine enters them, propelling the urine towards the bladder. The ureters are lined by transitional epithelium, not stratified squamous epithelium, and they have an adventitia layer which helps to anchor them in place.

The Ureters