In human anatomy, the ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder. source
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 ~3–4 mm in diameter. source
In the adult, the ureters are usually 25–30 cm (10–12 in) long and ~3–4 mm in diameter.
In humans, the ureters arise from the pelvis of each kidney, and descend on top of the psoas major muscle to reach the brim of the pelvis. source
In humans, the ureters arise from the pelvis of each kidney, and descend on top of the psoas major muscle to reach the brim of the pelvis.
The ureters cross in front of the common iliac arteries. source
The ureters cross in front of the common iliac arteries.
In the contracted bladder the ureters are about 2.5 cm. source
In the contracted bladder the ureters are about 2.5 cm.
In females, the ureters pass through the mesometrium and under the uterine arteries on the way to the urinary bladder. source
In females, the ureters pass through the mesometrium and under the uterine arteries on the way to the urinary bladder.
The ureter has a diameter of 3 mm but there are five constrictions. source
The ureter has a diameter of 3 mm but there are five constrictions.
At the ureteropelvic junction of the renal pelvis and the ureter. source
At the ureteropelvic junction of the renal pelvis and the ureter.
During the embryologic development of the kidney, the ureteropelvic junction is the last part of the ureter to become patent. source
During the embryologic development of the kidney, the ureteropelvic junction is the last part of the ureter to become patent.
The ureters receive a segmental arterial supply, which varies along its course. source
The ureters receive a segmental arterial supply, which varies along its course.
The upper part of the ureter closest to the kidney is supplied by the renal arteries source
The upper part of the ureter closest to the kidney is supplied by the renal arteries
The lower part of the ureter closest to the bladder is supplied by branches from the internal iliac arteries. source
The lower part of the ureter closest to the bladder is supplied by branches from the internal iliac arteries.
The ureters are richly innervated by nerves that travel alongside the blood vessels, building the ureteric plexus. source
The ureters are richly innervated by nerves that travel alongside the blood vessels, building the ureteric plexus.
The primary sensation to the ureters is provided by nerves that come from T12-L2 segments of the spinal cord. source
The primary sensation to the ureters is provided by nerves that come from T12-L2 segments of the spinal cord.
The ureter is surrounded by urothelium, a type of transitional epithelium that is capable of responding to stretches in the ureters. source
The ureter is surrounded by urothelium, a type of transitional epithelium that is capable of responding to stretches in the ureters.
