Pelvic Cavity in the Male: Coronal Sections 345

Coronal section through pelvic cavity at the level of prostate and hip joint (anterior aspect).

1 Acetabulum of hip joint

2 Urinary bladder

3 Head of femur

4 Internal urethral orifice

5 Prostate

6 Seminal colliculus

7 Obturator internus muscle

8 Ischiorectal fossa

9 Membranous urethra

10 Deep transverse perineus muscle

11 Crus penis and ischiocavernosus muscle

12 Prostatic part of urethra

13 Prostatic plexus

14 Levator ani muscle

15 Obturator externus muscle

16 Bulb of penis

17 Ampulla of rectum

18 Anal canal

19 Seminal vesicle

20 Internal anal sphincter muscle

21 External anal sphincter muscle

22 Anus

23 Psoas major muscle

24 Intervertebral disc

25 Ilium

26 Ligament of the head of the femur

27 Sacral promontory

Coronal section through pelvic cavity (MRI scan). Coronal section through anal canal.

346 Pelvic Cavity in the Male: Vessels of the Pelvic Organs

Pelvic cavity in the male (right half of parasagittal section). The arteries have been injected with red

resin. The parietal layer of peritoneum has been removed. The urinary bladder is filled to a great extent.

1 Left common iliac artery

2 Right common iliac artery

3 Right ureter

4 Right internal iliac artery

5 Right external iliac artery and vein

6 Right obturator artery and nerve

7 Umbilical artery

8 Sigmoid and superior vesical artery

9 Left ductus deferens

10 Urinary bladder

11 Pubic bone (cut)

12 Prostate

13 Vesicoprostatic venous plexus

14 Deep dorsal vein of penis and

dorsal artery of penis

15 Penis and superficial dorsal vein

16 Spermatic cord and testicular artery

17 Bulb of penis and deep artery of penis

18 Cauda equina and dura mater (divided)

19 Intervertebral disc between fifth

lumbar vertebra and sacrum

20 Sacral promontory

21 Mesosigmoid

22 Left ureter

23 Left internal pudendal artery

24 Ischial spine (cut), sacrospinal ligament,

inferior gluteal artery

25 Left inferior vesical artery

26 Seminal vesicle

27 Levator ani muscle

28 Branches of inferior rectal artery

29 Perineal artery

30 Anus

31 Posterior scrotal branches

32 Pudendal nerve and sacrotuberal ligament

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Pelvic Cavity in the Male: Vessels of the Pelvic Organs

1 Internal iliac artery

2 External iliac artery

3 Ureter

4 Obturator nerve

5 Umbilical artery

6 Anulus inguinalis profundus

(deep inguinal ring)

7 Urinary bladder (vesica urinaria)

8 Symphysis

9 Prostatic part of urethra

10 Sphincter muscle of urethra

11 Urethra (spongy part)

12 Cavernous body of penis

13 Glans penis

14 Sacrum

15 Promontory

16 Lateral sacral artery

17 Plexus sacralis

18 Inferior gluteal artery

19 Internal pudendal artery

20 Obturator artery

21 Inferior hypogastric plexus

22 Ductus deferens

23 Seminal vesicle (vesicula seminalis)

24 Rectum

25 Prostatic venous plexus

26 Prostate

27 Anal canal

28 Spongy part of penis

29 Pampiniform plexus

30 Testis and epididymis

31 Common iliac artery

32 Umbilical artery

33 Medial umbilical ligament

34 Branches of superior vesical artery

35 Urogenital diaphragm

36 Deep artery of penis

37 Dorsal artery of penis

38 Penis

39 Iliolumbar artery

40 Superior gluteal artery

41 Middle rectal artery

42 Levator ani muscle

43 Inferior rectal artery

44 Inferior vesical artery

Vessels of the pelvic cavity in the male (medial aspect, midsagittal section). The gluteus

maximus muscle has been removed.

Main branches of internal iliac artery in the male

(schematic drawing).

348 Pelvic Cavity in the Male: Abdominal Aorta

Abdominal part of the aorta showing an infrarenal

aneurysm with involvement of both iliac arteries (arrows)

(3-D reconstruction, courtesy of Prof. H. Rupprecht and

Dr. M. Rexer, Klinikum Fürth, Germany).

1 Twelfth thoracic vertebra (T12)

2 Twelfth rib (rib XII)

3 Inferior mesenteric artery

4 Fourth lumbar vertebra (L4)

5 Sacrum

6 Sacro-iliac articulation

7 Aorta (abdominal part)

8 Left common iliac artery (included into the aneurysm)

9 Aorta with aneurysm

10 Body of lumbar vertebra

11 Intrinsic muscles of the back

12 Thrombotic part of the aneurysm (green)

13 Inferior vena cava (compressed, blue)

14 Iliopsoas muscle

15 Vertebral canal

16 Aneurysm of the aorta (red)

Abdominal part of the aorta with an aneurysm, after injection of contrast medium.

Above = horizontal sections through the abdominal cavity, showing different contrast medium

concentrations within the aorta and the aneurysm; below = 3-D reconstruction of the aneurysm;

red = aorta; green = thrombotic areas; blue = vein (vena cava inferior, partly compressed).

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