The process of urination is under voluntary control in healthy humans and other animals, but may occur as a reflex in infants, some elderly individuals, and those with neurological injury.

Frequent urination is the need to pee more than usual throughout the day and night. UTIs are the most common cause.

May 10, 2021 · Your kidneys make urine by filtering wastes and extra water from your blood. The waste is called urea. Your blood carries it to the kidneys. From the kidneys, urine travels down …

For normal urination to occur, all body parts in the urinary tract need to work together, and in the correct order. The urinary tract includes two kidneys, two ureters, a bladder, and a urethra.

Jul 12, 2005 · Frequent urination may happen when there's a problem with part of the urinary tract. The urinary tract is made up of the kidneys; the tubes that connect the kidneys to the …

Urination, the process of excreting urine from the urinary bladder. Nerve centres for the control of urination are located in the spinal cord, the brainstem, and the cerebral cortex (the outer …

5 days ago · Frequent urination has many possible causes, and they’re not all related to a medical condition. Learn some reasons for peeing a lot, plus get coping tips.

Jul 4, 2025 · Most healthy people urinate five or six times a day. Holding your urine is uncomfortable but generally not harmful, and evidence that it causes UTIs is limited. Many …

During urination, the detrusor contracts and the sphincter mechanism relaxes, allowing smooth outflow of urine. As the bladder fills, modulatory centers in the brain prevent the occurrence of …

Jul 27, 2025 · Urination is the process of releasing urine from the body. It is the body's way of removing wastes and extra fluid through the urinary tract, which includes the kidneys, ureters, …