Urogenital triangle
Encyclopedia
The urogenital triangle is the anterior part of the perineum
. In females, it contains the vagina
and associated parts of the external genitalia.
and the two other vertices at the ischiopubic rami of the pelvic bone.
Perineum
In human anatomy, the perineum is a region of the body including the perineal body and surrounding structures...
. In females, it contains the vagina
Vagina
The vagina is a fibromuscular tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. Female insects and other invertebrates also have a vagina, which is the terminal part of the...
and associated parts of the external genitalia.
Structure
The urogenital triangle is the area bound by a triangle with one vertex at the pubic symphysisPubic symphysis
The pubic symphysis or symphysis pubis is the midline cartilaginous joint uniting the superior rami of the left and right pubic bones. It is located anterior to the urinary bladder and superior to the external genitalia; for females it is above the vulva and for males it is above the penis...
and the two other vertices at the ischiopubic rami of the pelvic bone.
Components
As might be expected, the contents of the urogenital triangle differ greatly between the male and the female. Some of the components include:- Posterior scrotal nervesPosterior scrotal nervesThe posterior scrotal branches or ""posterior labial branches"" are two in number, medial and lateral. They are branches of the perineal nerve, which is itself is a branch of the pudendal nerve...
/ Posterior labial nervesPosterior labial nervesThe posterior labial nerves are branches of the pudendal nerve.The counterparts in males are the posterior scrotal nerves.-External links: - "The Female Perineum: Muscles of the Superficial Perineal Pouch" - "Inferior view of female perineum, branches of the internal pudendal artery."... - UrethraUrethraIn anatomy, the urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids out of the body. In males, the urethra travels through the penis, and carries semen as well as urine...
- Bulbourethral glandBulbourethral glandA bulbourethral gland, also called a Cowper's gland for anatomist William Cowper, is one of two small exocrine glands present in the reproductive system of human males...
/ Bartholin's glandBartholin's glandThe Bartholin's glands are two glands located slightly posterior and to the left and right of the opening of the vagina. They secrete mucus to lubricate the vagina and are homologous to bulbourethral glands in males... - Muscles
- Transversus perinei superficialis muscleTransversus perinei superficialis muscle-External links: - "The Female Perineum: Muscles of the Superficial Perineal Pouch"...
- Ischiocavernosus muscleIschiocavernosus muscleThe ischiocavernosus muscle is a muscle just below the surface of the perineum, present in both men and women.-Function:It helps flex the anus, and stabilize the erect penis or tense the vagina during orgasm...
- Bulbospongiosus muscleBulbospongiosus muscleBulbospongiosus is one of the superficial muscles of the perineum. It has a slightly different origin, insertion and function in males and females. In males, it covers the bulb of the penis...
- Transversus perinei superficialis muscle
- Crus penis / Clitoral cruraClitoral crura- Anatomy :The clitoral crura are an internal portion of the clitoris. A single one is called a clitoral crus. They are shaped like an inverted "V" with the vertex of the "V" connecting to the clitoral body....
- Bulb of penisBulb of penisJust before each crus of the penis meets its fellow it presents a slight enlargement, named by Kobelt the bulb of the corpus spongiosum penis.It is homologous to the vestibular bulbs in females....
/ vestibular bulb