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

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Presentation on theme: "Pelvic diaphragm, urogenital diaphragm and perineum Sanjaya Adikari Department of Anatomy."— 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 Obturator fascia Ischiococcygeus IliococcygeusPubococcygeus Pelvic diaphragm… Levator aniCoccygeus White line (tendinous arch)

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7 Puborectalis Pubovaginalis Urogenital hiatus

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

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10 Levator prostatae Puboprostatic ligaments

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

13 Perineal triangles

14 Sacrotuberous ligament

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

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

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

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

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23 Attachment of superficial perineal fascia Perineal membrane

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

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

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

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

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

32 External anal sphincter Deep Superficial Subcutaneous Anococcygeal body

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

35 Penis Deep p. pouch Pudendal canal 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


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