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Learning Objectives Perineum 1 Lecture Anal Triangle 1.Perineum and Pelvis- Define the boundaries of the anatomical regions known as the perineum and pelvis.

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Presentation on theme: "Learning Objectives Perineum 1 Lecture Anal Triangle 1.Perineum and Pelvis- Define the boundaries of the anatomical regions known as the perineum and pelvis."— Presentation transcript:

1 Learning Objectives Perineum 1 Lecture Anal Triangle 1.Perineum and Pelvis- Define the boundaries of the anatomical regions known as the perineum and pelvis. 2.Anal Triangle a.Define the boundaries of the ischio-anal fossae. b.Describe the course of the pudendal nerve and internal pudendal vessels through the gluteal region and anal triangle. c.Define the location and contents of the pudendal canal. d.Describe the course and distribution of the inferior rectal nerve and vessels. e.Describe the location of the internal and external anal sphincter muscles. f.Define the location and importance of the perineal body. g.Define the types of hemorrhoids and the vessels involved in each. h.Describe the sensory nerve supply for the anal canal. i.Describe the blood supply and lymphatic drainage for the anal canal and peri-anal skin. j.Understand the importance of the fat in the ischio-anal fossae.

2 Netter 334 Ischial spine Obturator foramen

3 Netter 334

4 Moore et al; Fig. 3.3

5 Netter 334

6 Netter 474

7

8 Netter 335

9 Netter 336

10 Netter 335

11 Netter 336

12 Netter 334 Diagonal conjugate

13 Moore et al, Fig B3.2

14 Anorectal hiatus Urethral hiatus Tendinous arch Piriformis m. (Ischio)coccygeus m. Iliococcygeus m. Puborectalis m. Pubococcygeus m. Obturator internus m. Plate 340

15 Plate 341 Gluteus maximus m. (Ischio)coccygeus m. Iliococcygeus m. Pubococcygeus m. Puborectalis m. Urethra

16 Plate 338 Urethra Vagina Rectum Piriformis m. Tendinous arch Pubococcygeus m. Iliococcygeus m. (Ischio)coccygeus m.

17 Urethra Vagina Plate 339 Sacrotuberous ligament Obturator internus m. Pubococcygeus m. Puborectalis m. Iliococcygeus m. (Ischio)coccygeus m.

18 Plate 338 Rectum VaginaUrethra Piriformis m. Obturator internus m. Tendinous arch (Ischio)coccygues m. Iliococcygues m. Pubococcygeus m.

19 Moore et al, Fig. 3.8

20 Backhouse & Hutchings, Plate 435

21 S3 S2 S3 S4 Netter 159

22 Snell, Fig. 4-3Snell, Fig 4-3

23 Snell, Fig 4-4

24 Plate 360

25 Snell; Fig 23-2

26 Levator ani m. Gluteus maximus m. External anal sphincter m. Perineal body Plate 362

27 Plate 358 Gluteus maximus m. Levator ani m. Perineal body External anal sphincter m.

28 Plate 393 Inferior rectal nn. Perineal n. Dorsal n. of clitoris Pudendal nerve

29 Plate 384 Inferior rectal a. Internal pudendal a. Perineal a.

30 Plate 391 Fascia of obturator internus m. forming pudendal canal Inferior rectal nn. Perineal n. Posterior scrotal n Inferior rectal a Pudendal n.

31 Plate 385 Inferior rectal a. Inferior rectal v. Perineal a. and v. Pudendal canal

32 Plate 372 Fat in ischioanal fossa Obturator internus m. Levator ani m. Pudenal canal with pudendal n, internal pudendal a. and v. Rectum Anal canal

33 Plate 373 RECTUM Anal columns Internal venous plexus External venous plexus Levator ani m. External anal sphincter m.

34 Plate 374 External anal sphincter m. Internal anal sphincter m. Anal valves Anal columns Internal venous plexus External venous plexus

35 Plate 378 Internal pudendal a. Obturator internus m. Inferior rectal a. Superior rectal a. Middle rectal a.

36 Plate 379 Inferior rectal v. Internal pudendal v. Obturator internus m. Superior rectal v. Middle rectal v. External venous plexus Internal venous plexus Levator ani m.

37 Anal Fissure Ramsayhealth.co.uk

38 Hemorrhoids

39 Anal Fistula


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