Urethra is the tube from the bladder leading to in vitro. Slender male urethra, about 18cm, from the mouth of the urethra from the bladder, on the urethral orifice, the journey through the prostatic, membranous and the Ministry of the penis, the male urethra function of both urination and ejaculation. Thick female urethra is short, about 5cm, from the mouth of the urethra, the vagina in front of the opening in the vestibule of the vagina. Membranous urethra in the male urethra has a sphincter composed of circular striated muscle, called the urethral sphincter, the sense of control. Female urethra through the urogenital diaphragm in the perineum, the urethral sphincter around the vagina, which is striated muscle, but also by the will to control.
Translated by Google
Male urethra
男性尿道
Both male urethra male urethra is the ejaculation urination Road and pipeline. From the mouth of the urethra, beyond the tip of the penis head and external urethral orifice, adults about 18 cm, the whole can be divided into three parts: prostatic (through the part of the prostate), membranous (the part through the urogenital diaphragm, about 1.2 cm) and the cavernous department (through the cavernous part of the urethra), the Ministry of clinical prostate and the membranous portion will be called after the whole urethra, the Ministry called the anterior urethral sponge. Male urethral stricture, three full and two bending. The narrow mouth of the three is the urethra, membranous and the urethral orifice. Two are located in the pubic symphysis below the bend and before the bottom of the pubic symphysis. Male urethra is long and curved, it means that the way male urination longer, bend some, that men more difficult urination. If the adolescent boys, the prostate just development, there will be increasing phenomenon, so that narrows the urethra, making urination difficult boys. Therefore, there will be difficulties in urinating adolescent boys can not be discharged even the case of urine. This is normal, so the adolescent boys drink plenty of water, less holding back urine. If urine can not be discharged, and a belly full of inflation, the bladder position bellied, his case should promptly check for urinary retention, severe should go to the hospital catheterization.
Translated by Google
Female urethra
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
女性尿道
Female urethra is short, only 2.5-5 cm long, with an average of 3.5 cm in diameter and about 8 mm, easy expansion, up to 10-13 mm, no bending, before the pubic symphysis in the vagina, the bladder neck downward since to move beyond the urethral opening. Female urethral tissue: the central and external mucosa and vaginal mucosa is similar to square epithelium, and bladder neck into the upper part of the same transitional epithelium. In the submucosa and muscle layer by a loose tissue in the muscle by a rich venous network outside the organization, the urethral sponge tissue. Urethral gland in the female urethra is very rich, most notably the paraurethral glands, these glands secrete mucus containing columnar epithelium. Lymph urethra: urethral mucosa in many lymphatic vessels and lymph nodes, lymphatic drainage to both sides of the groin and hypogastric lymph nodes. Blood supply to the urethra: bladder artery supply to the upper part of the urethra, vagina urethra central artery, pudendal artery supply the lower part of the urethra. Vein to the bladder, vagina and perineum venous plexus within the return. Urethral physiology: the female urethra and bladder main function is to secrete mucus; urethral gland is a subsidiary of gonads, secreting mucus transparent and contains protein, whose role is to increase lubrication during sex.
Translated by Google
Chinese Dictionary
Urinary bladder through the urethra to the surface of the urinary pipe.
Translated by Google
Wikipedia Daquan
尿道 百科大全
Urethra urethra Voiding of the pipe. Man's urethra doubles as a pipe ejaculation, long 16 ~ 20cm, was S shaped curve, the urethral opening at the mouth of the penis. Female urethra is short and thick, about 3 ~ 4cm long, closely linked with the anterior vaginal wall, openings in the vestibule of the vagina. Intubation in the urinary tract should pay attention to these physiological characteristics.
