urogenital diaphragm造句

• The lower third is the perineal body; it may be described as containing the perineal body, pelvic diaphragm and urogenital diaphragm.
• The term " urogenital diaphragm " is often confused with the pelvic diaphragm ( pelvic floor ), which is a true diaphragm supporting many of the pelvic organs.
• Between the superior and inferior fascia of the urogenital diaphragm, the female urethra is surrounded by the urethral sphincter . external urethral sphincter is supplied by the pudendal nerve.
• The urethra and the vagina, though part of the pouch, are usually said to be passing through the urogenital diaphragm, rather than part of the diaphragm itself.
• Below, the obturator fascia is attached to the falciform process of the sacrotuberous ligament and to the pubic arch, where it becomes continuous with the superior fascia of the urogenital diaphragm.
• The term " diaphragm " in anatomy can refer to other flat structures such as the urogenital diaphragm or pelvic diaphragm, but " the diaphragm " generally refers to the thoracic diaphragm.
• In the male, it runs forward and medially, pierces the inferior fascia of the urogenital diaphragm and enters the corpus cavernosum urethr? in which it is continued forward to the glans penis.
• Commencing below the inferior fascia of the urogenital diaphragm it passes forward and upward to the front of the pubic symphysis; and then, in the flaccid condition of the penis, it bends downward and forward.
• It extends downward and forward, with a slight anterior concavity, between the apex of the prostate and the bulb of the urethra, perforating the urogenital diaphragm about 2.5 cm below and behind the pubic symphysis.
• The ridges are continuous with similar ones on the inferior ramus of the pubis : to the outer is attached the deep layer of the superficial perineal fascia ( fascia of Colles ), and to the inner the inferior fascia of the urogenital diaphragm.
• Their posterior ends are expanded and are in contact with the greater vestibular glands; their anterior ends are tapered and joined to one another by the pars intermedia; their deep surfaces are in contact with the inferior fascia of the urogenital diaphragm; superficially they are covered by the bulbospongiosus.
• They pierce the fascia of the urogenital diaphragm, and run forward along the lateral part of the urethral triangle in company with the posterior scrotal branches of the perineal artery; they are distributed to the skin of the scrotum or labia and communicate with the perineal branch of the posterior femoral cutaneous nerve.
• Above, it is blended with the interpubic fibrocartilaginous lamina; laterally, it is attached to the inferior rami of the pubic bones; below, it is free, and is separated from the fascia of the urogenital diaphragm by an opening through which the deep dorsal vein of the penis passes into the pelvis.
• The hinder part of the urethral bulb lies in apposition with the inferior fascia of the urogenital diaphragm, but its upper portion diverges somewhat from this fascia : the anterior wall of the membranous urethra is thus prolonged for a short distance in front of the urogenital diaphragm; it measures about 2 cm in length, while the posterior wall which is between the two fasci?of the diaphragm is only 1.25 cm long.
• The hinder part of the urethral bulb lies in apposition with the inferior fascia of the urogenital diaphragm, but its upper portion diverges somewhat from this fascia : the anterior wall of the membranous urethra is thus prolonged for a short distance in front of the urogenital diaphragm; it measures about 2 cm in length, while the posterior wall which is between the two fasci?of the diaphragm is only 1.25 cm long.