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
membrane

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