Perineum Flashcards
What are the contents of the male perineum?
External genitalia
Perineal muscles
Anal canal
What are the contents of the female perineum?
Female external genitalia
Perineal muscles
Anal canal
What are the subdivisions of the perineum?
Urogenital triangle
Anal triangle
Where is the line separating the urogenital and anal triangles?
Line between two ischial tuberosities transversley
Which perineal triangle lies inferior to the pubic symphysis?
Urogenital triangle
Which perineal triangle lies anteroinferior to the coccyx?
Anal triangle
Where does the perineal membrane run?
Between the right and left sides of the pubic arch, below the pubic symphysis
What is the innervation of the external anal sphincter?
Branch of pudendal nerve
What are the main actions of the external anal sphincter?
Constricts anal sphincter during peristalsis
What is the innervation of the bulbospongiosus muscle?
Muscular/deep branch of perineal nerve
Branch of pudendal nerve
What is the innervation of the ischiocavernous muscle?
Muscular/deep branch of perineal nerve
Branch of pudendal nerve
What is the innervation of the superifical transverse perineal muscle?
Muscular/deep branch of perineal nerve
Branch of pudendal nerve
Dorsal nerve of penis/clitoris
Terminal branch of pudendal nerve
What is the innervation of the deep transverse perineal muscle?
Muscular/deep branch of perineal nerve
Branch of pudendal nerve
Dorsal nerve of penis/clitoris
Terminal branch of pudendal nerve
What is the innervation of the external urethral sphincter?
Muscular/deep branch of perineal nerve
Branch of pudendal nerve
Dorsal nerve of penis/clitoris
Terminal branch of pudendal nerve
What are the main actions of the bulbospongiosus muscle?
Support and fixes perineal body/ pelvic floor