<P> In human anatomy , the ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder . In the adult , the ureters are usually 25 -- 30 cm ( 10 -- 12 in ) long and around 3 -- 4 mm ( 0.12 -- 0.16 in ) in diameter . Histologically , the ureter is lined by the urothelium , a type of transitional epithelium , and has an additional smooth muscle layer in the more distal one - third to assist with peristalsis . </P>
<P> In human anatomy , the ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder . In the adult , the ureters are usually 25 -- 30 cm ( 10 -- 12 in ) long and around 3 -- 4 mm ( 0.12 -- 0.16 in ) in diameter . Histologically , the ureter is lined by the urothelium , a type of transitional epithelium , and has an additional smooth muscle layer in the more distal one - third to assist with peristalsis . </P>
what tissue types form the wall of the ureter
what tissue types form the wall of the ureter
the urothelium , a type of transitional epithelium , and has an additional smooth muscle layer in the more distal one - third to assist with peristalsis
the urothelium , a type of transitional epithelium , and has an additional smooth muscle layer in the more distal one - third to assist with peristalsis