![]() ![]() The organ is the most elastic in the body and it can accommodate around 600 to 800 ml of urine at a given time. It functions as a vessel to store urine and to delay urine frequency. This tissue connects the bladder to the tissues surrounding the pelvis. The inferior and lateral sides of the bladder has a layer of a loose connective tissue namely adventitia.Due to the positioning of the urinary bladder in the abdominopelvic cavity, its outermost layer consists of serous membrane which protects the bladder against friction between organs in the cavity.It holds the urine in the bladder and relaxes to allow the outflow of urine. The muscularis form the internal urethral sphincter surrounding the urethral opening. This visceral muscle layer is called as muscularis and is also called detrusor muscle. The submucosa is next lined with a layer of visceral muscles which provide the bladder the ability to contract and expand.Next comes the submucoal lining which is actually a connective tissue layer consisting of nervous tissue and blood vessels which control and support the other surrounding layers.This tissue also protects the bladder from alkaline or acidic urine. The mucosa lining the urinary bladder is additionally lined with transitional epithelial tissue that can stretch to store large volumes of urine. Mucosa layer forms the innermost layer lining the hollow organ.The urinary bladder consists of different layers of tissue: This lumen or the urinary bladder has a small funnel like opening at its inferior end leading to the urethra. Ureteral openings from both the kidneys allow the urine to enter a hollow lumen. Tiny wrinkles called the rugae are found in the inner lining of the bladder which allow the bladder to stretch as the urine fills up. When a woman is pregnant, the uterus enlarges and puts pressure on the bladder and so the woman urinates often. In females, it is a little smaller in size as it must share the space in the pelvic cavity with the uterus.
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