Urinary bladder: function, blood supply and innervation - Human Anatomy | Kenhub

Here we take a look at the gross anatomy, function, blood supply and innervation of the urinary bladder. Take a closer look at parts of the urinary bladder anatomy in our atlas: https://khub.me/73miu

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The urinary bladder is a unique 'sac-like' organ, located near the pelvic floor, which receives urine from the kidneys via the ureters. The urinary bladder is hollow and somewhat pear-shaped in appearance. It has a muscular, elastic wall, which allows it to expand and distend when filled.

Urine is received into the body of the bladder, and is eliminated through the urethra. The fundus is the base of the bladder, which is formed by the posterior wall and contains the trigone of the bladder. The trigone is the structure that contains the outlet (urethra) of the bladder.

While the general volume of the human bladder will vary from person to person, the range of urine that can be held in the bladder is roughly 400 mL (~13.5 oz) to 1000 mL (~34 oz), with the average capacity being 400 to 600 mL.

1:42 Parts of the urinary bladder
4:00 Urethra
5:46 Blood supply
6:21 Innervation

Want to test your knowledge on the urinary bladder? Take this quiz:
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Read more on the urinary bladder, including some related clinical conditions here:
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For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/h3ecf

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