Urge to Urinate

The urge to empty the bladder, which is also called micturition, occurs in men with a bladder filling of approx. 350 ml and in women with 250 ml or more.

The filling state of the bladder is registered by stretch receptors in the bladder wall and reported to the brain via afferent vegetative nerves. From a filling level of approx. 350ml the pulse frequency increases and causes the feeling of urge to urinate. Information about efferente vegetative (parasympathetic) nerves is transmitted to the bladder via the micturition center in the brainstem via the sacrum. There it comes to the contraction of the Detrusor vesicae. At the same time the inner sphincter muscle slackens via the pubic nerve.

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