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Pelvic diaphragm, urogenital diaphragm and perineum

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Presentation on theme: "Pelvic diaphragm, urogenital diaphragm and perineum"— Presentation transcript:

1 Pelvic diaphragm, urogenital diaphragm and perineum
Sanjaya Adikari Department of Anatomy

2 Describe/draw Pelvic diaphragm/floor Urogenital and anal triangles
Urogenital diaphragm Deep perineal pouch & contents Superficial perineal pouch & contents

3 Pelvic diaphragm/Floor
Consists of Levator ani Coccygeus Superior and inferior pelvic fascia

4 Pelvic diaphragm

5 Pelvic diaphragm… Obturator fascia Ischiococcygeus Iliococcygeus
Pubococcygeus White line (tendinous arch) Levator ani Coccygeus


7 Puborectalis Pubovaginalis Urogenital hiatus

8 Puborectalis, pubovaginalis, levator prostatae
Anorectal junction Puborectalis Anococcygeal raphe Pubovaginalis Levator prostatae


10 Levator prostatae Puboprostatic ligaments


12 Perineum Sacrotuberous ligament Coccyx Anal triangle subpubic angle
Urogenital triangle Ischiopubic ramus Anterior end of ischial tuberosity

13 Perineal triangles

14 Sacrotuberous ligament

15 Perineal body Fibromuscular mass to which pelvic diaphragm and perineal muscles are attached Perineal body/central perineal tendon Pubis

16 Urogenital diaphragm Deep perineal pouch Prostate External Sphincter
Perineal membrane/inferior fascia UD Prostate External Sphincter Perineal body/ central perineal tendon

17 Urogenital diaphragm Consists of
Superior fascia (blends with inferior pelvic fascia) Inferior fascia (perineal membrane) Sphincter urethrae muscle Deep transverse perineal muscles

18 Deep perineal pouch Space between the superior and inferior fasciae of the urogenital diaphragm Contents Membranous urethra Internal pudendal vessels Dorsal nerve of penis Perineal nerve Bulbourethral glands (Bartholin glands in superficial pouch) Sphincter urethrae and deep transverse perineal muscles

19 Deep perineal pouch Bulbourethral glands Sphincter urethrae
Vessels and nerves Deep transverse perineal muscles


21 Superficial perineal pouch
Membranous layer of superficial fascia of abdomen/ fascia Scarpa Superficial perineal fascia/Colles Superficial perineal pouch Corona of glans penis


23 Attachment of superficial perineal fascia

24 Superficial perineal pouch…. Cont.
ischioanal fossa superficial transverse perineal muscle bulbospongiosus ischiocavernosus superficial perineal fascia

25 Superficial perineal pouch
Space between the superficial perineal fascia and the perineal membrane Contents Bulbospongiosus muscle Ischiocavernosus muscle superficial transverse perineal muscles Root and the body of the penis testicles



28 Parts of the penis & muscle attachments
Bulbospongiosus Bulb Crus Corpus spongiosum Corpus cavernosum Root Body Glans Ischiocavernosus


30 Anal canal Tube within a funnel Levator ani External anal sphincter
skeletal muscle Internal anal sphincter smooth muscle

31 Ischioanal (ischiorectal) fossa
Obturator internus and fascia Ischial tuberosity Skin

32 External anal sphincter
Anococcygeal body Deep Superficial Subcutaneous


34 Nerve to obturator internus
Sacrospinous ligament Internal pudendal artery Pudendal nerve Ischial spine

35 Nerve to obturator internus
Internal pudendal artery Pudendal nerve Inferior rectal nerve & artery Dorsal nerve of penis Perineal nerve Dorsal artery of penis Perineal artery Deep artery of penis Deep p. pouch Penis Pudendal canal

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