Urination
(Redirected from Urine output)
Urination is a vital physiological process that allows the body to excrete waste products in the form of urine. It is a complex process involving multiple organ systems, particularly the kidneys, bladder, and the muscles of the pelvic floor.
Overview[edit | edit source]
Urination begins with the production of urine in the kidneys, where waste products from the blood, such as urea and uric acid, are filtered out and combined with water to form urine. The urine then travels down the ureters to the bladder, where it is stored until the process of urination.
Process of Urination[edit | edit source]
The process of urination, or micturition, involves both involuntary and voluntary muscle actions. When the bladder is about half-full, stretch receptors in the bladder wall send signals to the brain. This results in the involuntary contraction of the detrusor muscle and the relaxation of the internal urethral sphincter, allowing urine to enter the urethra. The final step of urination, the release of urine from the body, is a voluntary action controlled by the external urethral sphincter.
Related Health Conditions[edit | edit source]
Several health conditions can affect urination. These include urinary incontinence, urinary tract infections, urinary retention, and benign prostatic hyperplasia in men. Certain neurological conditions, such as stroke or spinal cord injury, can also interfere with the normal process of urination.
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Contributors: Prab R. Tumpati, MD
