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Nervous control of urination involves the bladder mechanism. The bladder mechanism involves filling and releasing of the bladder. The mechanism is controlled by various muscles such as the pelvic floor muscle and sphincter muscles.
The exit from the bladder, also known as the urethra, is closed during intercourse primarily due to the contraction of pelvic floor muscles and the sphincter mechanism. This closure helps prevent the involuntary release of urine, ensuring that the bladder remains sealed. Additionally, this mechanism allows for a more pleasurable sexual experience by maintaining focus on the reproductive organs without the distraction of bladder control issues.
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The exit speed of urine can vary, but it typically ranges from about 10 to 20 miles per hour (16 to 32 kilometers per hour) when expelled from the bladder. Factors such as bladder pressure, urethral anatomy, and individual physiology can influence this speed. However, this is a general estimate and may differ from person to person.
The tube that travels from the kidney to the bladder is called the ureter, not to be confused with the tube that travels from the bladder to the exit point from the body, which is called the urethra.
The rings of muscles that control entry into or exit from an organ are called sphincters. These circular muscles contract and relax to regulate the passage of substances through various openings in the body, such as the esophagus, stomach, and intestines. Sphincters play a crucial role in maintaining bodily functions by controlling the flow of food, waste, and other materials. Examples include the lower esophageal sphincter and the anal sphincter.
Urine exits the female body through the urethra, which is a tube that connects the bladder to the external opening. The urethra is located just above the vaginal opening and is part of the urinary system. When the bladder fills, nerve signals prompt the muscles to contract, allowing urine to flow out through the urethra.
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Liquid wastes from the body exit through the urinary system by being excreted as urine. The kidneys filter waste from the blood, which then travels through the ureters to the bladder for storage. When the bladder is full, urine is expelled through the urethra.
The Urethracarries Urine from the Urinary Bladder to the exterior of the body.
Urine exits the body at varying pressures, typically ranging from 8 to 20 pounds per square inch (psi). This pressure is influenced by factors such as the bladder's contractions and the individual's muscle control.
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