What is the primary function of micturition?

The primary function of micturition, which refers to the process of urination, encompasses the filling, storage, and contraction of the bladder. During micturition, the bladder is initially filled with urine produced by the kidneys and stored until the body is ready to excrete it. The bladder has a muscular wall that enables it to expand and accommodate urine, and the contraction of this muscular wall is essential for the voiding phase of micturition.

This process also involves complex neural signals that coordinate the muscle contractions in the bladder and the relaxation of the sphincters, but at its core, micturition involves the bladder's ability to fill and store urine, followed by its contraction to expel the stored urine into the urethra. Understanding these phases is crucial for recognizing potential disorders related to micturition, such as incontinence or urinary retention, which can arise from dysfunction in any phase of this process.