Why incontinence occurs during ejaculation (relationship between urethra and vagina)

　　There is a scientific explanation in medicine for the phenomenon of incontinence during ejaculation, and this is inseparable from the close connection between the urethra and vagina. Understanding the relationship between them can not only help us better understand our own physiological structure, but also eliminate some unnecessary misunderstandings and worries. Next, we’ll look in detail at the relationship between the urethra and vagina and the causes of incontinence during squirting.

Physiological structure of urethra and vagina

　　Structure of the urethra: The urethra is part of the human urinary system and is the passage through which urine is discharged from the body. female The urethra is relatively short, generally about 3-5 cm in length. It originates at the neck of the bladder, passes through the pelvic floor muscles, and opens into the vaginal vestibule. There is a urethral sphincter surrounding the urethra, which can control the discharge of urine. Under normal circumstances, it can open and close autonomously to maintain normal discharge of urine.

　　Structure of the vagina: The vagina is an important part of the female reproductive system and is the connection Uterus and external genital passages. It is an elastic muscular tube with a length of approximately 7-10 cm. The vagina is adjacent to the urethra in front and the rectum in the back. The vaginal wall is composed of mucous membrane, muscular layer and adventitia. It is highly stretchable and plays an important role in sexual life and childbirth.

　　The positional relationship between the two: The urethra and vagina are very close to each other in the female body, and they are both located in the pelvic floor area. The urethra is located in front of the vagina, separated by only a thin layer of tissue. This close positional relationship causes them to influence each other in physiological functions, and also provides a certain anatomical basis for the occurrence of incontinence during spraying.

Physiological mechanism of ejaculation

　　Definition of Squirting: Squirting is the phenomenon in which a woman discharges large amounts of clear fluid from her urethra when sexual stimulation reaches a certain level. This fluid is not urine but is secreted by Skene's glands, also known as the female prostate. Skene's glands are located around the urethra, and when sexually stimulated, the fluid secreted by these glands is excreted through the urethra, causing ejaculation.

　　The relationship between squirting and sexual excitement: Sexual excitement is a prerequisite for squirting to occur. When a woman is in a state of sexual excitement, her body will undergo a series of physiological changes, including congestion of reproductive organs, muscle tension, etc. As sexual stimulation continues to increase, Skene's glands will secrete large amounts of fluid, and the pelvic floor muscles will also contract involuntarily. These physiological changes work together to encourage the passage of fluid from the urethra.

Causes of incontinence during squirting

　　Effects on muscle control: During ejaculation, the pelvic floor muscles contract strongly. This contraction may affect the normal function of the urethral sphincter, causing it to be unable to effectively control the passage of urine. When the control ability of the urethral sphincter weakens, urine may be discharged along with the spurting liquid, resulting in incontinence.

　　Effects of Pressure Changes: During sexual arousal, the pressure around the reproductive organs and bladder changes. During ejaculation, the fluid secreted by Skene's glands is discharged rapidly, causing a sudden increase in pressure in the urethra. This pressure change may be transmitted to the bladder, causing the pressure within the bladder to increase as well. When the pressure in the bladder exceeds the capacity of the urethral sphincter, it will cause involuntary discharge of urine.

　　Interference from psychological factors: Psychological factors may also play a role in the process of incontinence during spraying. Some women may feel nervous and anxious during sexual activities, and these negative emotions can affect nerve Systemic control of the pelvic floor muscles and urethral sphincter. Under the interference of psychological factors, the urethral sphincter is more likely to become dysfunctional, thereby increasing the chance of incontinence.