Anatomy Flashcards
Sacrospinous ligament: OI
Ischial spine to sacrum
Sacrotuberous ligament
Ischial tuberosity to sacrum
Vulva (includes..)
Region below moms pubis including labia majora, labia minora, and clitoris
Prepuce
Clitoral hood made up of skin folds
Frenulum
Anterior conjoining of labia minora, inferior to clitoris
Vestibule
Inside bilateral labia minora to hymenal sulci; demarcated by Harts line.
Hart’s line
Imaginary line between labia minora and vestibule
Skene’s glands
Periurethral
Bartholins glands
Inside vestibule
–mucous production, lubrication for intimacy
Bulbocavernosus/bulbospongiosus
Function and innervation.
Function: initiates erection of clitoris and functions and vagina sphincter in females, assists in erection in males
Innervation: S2-4 (pudendal)
Ischiocavernosus
Function and innervation
Compresses the penis which obstructs venous return and maintains erection
Innervation: pudendal S2-4
Superficial transverse perineal
Function and innervation
Stabilizes the perineum
Pudendal nerve S2-4
Levator ani (muscles)
Pubococcygeus
Puborectalis
Iliococcygeus
Coccygeus (some include…)
Levator ani muscle fibers
70% slow twitch
30% fast twitch
2 divisions on pubococcygeus
Puboperinealis
Pubovaginalis
Pubococcygeus
Function and innervation
Elevates perineum and anus
Innervation: nerve to Levator ani S3-5
Puborectalis
Function/innervation
Fecal continence– “sling” around rectum
Innervation: S2-4
Iliococcygeus
Function/innervation
Urinary continence/support
Innervation: S4-5
Coccygeus
Flexes coccyx
Innervation: S4-5
Posterior fourchette
Posterior wall of vagina where skin of labia minora comes together
Parametrium
Uterine/cervix support
Paracolpium
Vaginal support
Paravesicle/cervical
Bladder support
IAS muscle fibers
Involuntary
Inner circular muscle layer within anal sphincter
