ANATOMY

Detailed explanation-1: -Smooth muscle stretch initiates the micturition reflex by activating stretch receptors in the bladder wall. This autonomic reflex causes the detrusor muscle to contract and the internal urethral sphincter muscle to relax, allowing urine to flow into the urethra.

Detailed explanation-2: -Micturition is initiated by a supraspinal reflex pathway that passes through a centre in the brainstem. The pathway is triggered by myelinated afferents (A-fibres), which are connected to the tension receptors in the bladder wall.

Detailed explanation-3: -Certain drinks, foods and medications may act as diuretics-stimulating your bladder and increasing your volume of urine. They include: Alcohol. Caffeine.

Detailed explanation-4: -The micturition reflex is a bladder-to-bladder contraction reflex for which the reflex center is located in the rostral pontine tegmentum (pontine micturition center: PMC). There are two afferent pathways from the bladder to the brain.

Detailed explanation-5: -The urinary system includes the kidneys, ureters, bladder and urethra. This system filters your blood, removing waste and excess water. This waste becomes urine.