Urinblåstömning

Urinblåstömning is the process by which urine is expelled from the urinary bladder out of the body. This physiological function is also known as micturition or urination. The bladder is a muscular organ that stores urine produced by the kidneys. When the bladder fills to a certain capacity, stretch receptors in its walls send signals to the brain, creating the sensation of needing to urinate.

The process of emptying the bladder involves a coordinated action between the nervous system and the muscular structures of the urinary tract. When an individual decides to urinate, the brain signals the detrusor muscle, which forms the wall of the bladder, to contract. Simultaneously, the internal and external urethral sphincters, which are rings of muscle that normally keep the urethra closed, relax, allowing urine to flow out through the urethra and out of the body.

Several factors can influence urinblåstömning, including fluid intake, age, certain medical conditions, and medications. Problems with bladder emptying can manifest as difficulty initiating urination, a weak stream, incomplete emptying, or urinary incontinence. These issues can be indicative of underlying health concerns affecting the bladder, prostate, or nervous system. Medical evaluation is often necessary to diagnose and treat any dysfunctions related to urinblåstömning.