Slide 1

Justin R. Stone AH 129 Tortora: Ch 11 Muscles of the Extremities Slide 2 Muscles: Pelvic Floor and Perineum Slide 3 Pelvic Floor Levator Ani Pubococcygeus Iliococcygeus Superficial Transverse Perineal Perineum Bulbospongiosus Ischiocavernosus Deep Transverse Perineal External Urethral Sphincter External Anal Sphincter Slide 4 PELVIS: Pelvic Floor Levator Ani Pubococcygeus Iliococcygeus Coccygeus Slide 5 PELVIS: Pelvic Floor Levator Ani Most important muscle of pelvic floor Counters force of Valsalva Constricts/Forms Sphincters of Anus, Urethra, and Vagina N: S2-4 2 Divisions: PuboCoccygeus Iliococcygeus Slide 6 PELVIS: Pelvic Floor PuboCoccygeus O/I: O: Pubis I: Coccyx, Urethra, Anal Canal, Perineal Body of the Perineum, Anococcygeal Raphe (*All Insertions are Midline) Iliococcygeus O: O: Ischial Spine I: Coccyx Slide 7 Levator Ani Pubococcygeus Iliococcygeus Slide 8 Slide 9 PELVIS: Pelvic Floor Coccygeus O/I: O: Ischial Spine I: Sacrococcygeal Junction N: S4-5 A: Pulls coccyx anteriorly following defecation or childbirth Assists in countering force of Valsalva Slide 10 Coccygeus Slide 11 Muscles: Perineum Slide 12 PELVIS: Pelvic Floor and Perineum Superficial Transverse Perineal Bulbospongiosus Ischiocavernosus Deep Transverse Perineal External Urethral Sphincter External Anal Sphincter Slide 13 PELVIS: Perineum Superficial Transverse Perineal O/I: O: Ischial Tuberosity I: Perineal Body of Perineum N: Pudendal A: Stabilizes Perineal Body of Perineum Slide 14 Superficial Transverse Perineal Slide 15 PELVIS: Perineum Deep Transverse Perineal O/I: O: Ischial Rami I: Perineal Body of Perineum N: Pudendal A: Aids in expelling last drops of urine and semen Slide 16 Deep Transverse Perineal Slide 17 PELVIS: Perineum Bulbospongiosus O/I: O: Perineal Body of Perineum I: Male: Perineal membrane of deep muscles of perineum and dorsal penis Female: Pubic arch, root of dorsal clitoris N: Pudendal A: Aids expulsion of urine and semen Assists in erection of penis/clitoris Slide 18 PELVIS: Perineum Ischiocavernosus O/I: O: Ischial Tuberosity O: Ischial and Pubic Rami I: Male: Corpus Cavernosum of Penis Female: Clitoris N: Pudendal A: Maintains erection of penis/clitoris Slide 19 Bulbospongiosus Ischiocavernosus Slide 20 Bulbospongiosus Ischiocavernosus Slide 21 Slide 22 PELVIS: Perineum External Anal Sphincter O/I: O: Annococcygeal Ligament I: Perineal Body of Perineum N: Pudendal, S4 A: Maintains closure of Anal Canal and Anus External Urethral Sphincter O/I: O: Ischial and Pubic Rami I: Male: Median Raphi Female: Vaginal Wall N: Pudendal, S4 A: Helps expel last drops of urine/semen Slide 23 External Anal Sphincter External Urethral Sphincter Slide 24 External Anal Sphincter External Urethral Sphincter Slide 25 PELVIS: Perineum Lab: Pelvis: Perineum Color: Netters Flashcards