ANATOMY

Detailed explanation-1: -Urethra. This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.

Detailed explanation-2: -Incontinence will occur if your bladder muscles suddenly contract or the sphincter muscles are not strong enough to hold back urine. Urine may escape with less pressure than usual if the muscles are damaged, causing a change in the position of the bladder.

Detailed explanation-3: -Involuntary muscle movements send signals to the nervous system, putting the decision to urinate under conscious control. The internal urethral sphincter and the external urethral sphincter both provide muscle control for the flow of urine.

Detailed explanation-4: -Glomerular Filteration. Glomerular filtration occurs in the glomerulus where blood is filtered. Reabsorption. Around 99 per cent of the filtrate obtained is reabsorbed by the renal tubules. Secretion. The next step in urine formation is tubular secretion. Urine. 31-May-2020