Micturition is defined as what process?

Micturition is the physiological process of urination, which involves the expulsion of urine from the bladder through the urethra. This process is controlled by the nervous system and includes both voluntary and involuntary components. When the bladder fills with urine, stretch receptors signal the brain, leading to the urge to urinate. The process involves the relaxation of the sphincters and the contraction of the bladder muscles, allowing for the expulsion of urine.

Understanding this term is crucial in the context of human biology and nutrition because it relates to the body's waste elimination processes, which are essential for maintaining fluid balance and removing metabolic waste. Proper hydration and nutrition can affect micturition patterns and urinary health, making it an important topic within the study of nutrition and overall bodily functions.