336 Male Urogenital System

1 Sigmoid colon

2 Ampulla of rectum

3 Ampulla of ductus deferens

4 External anal sphincter muscle

5 Internal anal sphincter muscle

6 Anal canal

7 Bulb of penis

8 Testis (cut surface)

9 Median umbilical ligament

10 Urinary bladder

11 Internal urethral orifice and sphincter

12 Pubic symphysis

13 Prostatic part of urethra

14 Prostate gland

15 Membranous part of urethra and external

urethral sphincter

16 Corpus cavernosum of penis

17 Spongy urethra

18 Corpus spongiosum of penis

19 Foreskin or prepuce

20 Glans penis

21 Kidney

22 Renal pelvis

23 Abdominal part of ureter

24 Pelvic part of ureter

25 Seminal vesicle

26 Ejaculatory duct

27 Bulbo-urethral or Cowper’s gland

28 Ductus deferens

29 Epididymis

30 Umbilicus

31 Trigone of bladder and ureteric orifice

32 Navicular fossa of urethra

33 External urethral orifice

34 Testis

Male urogenital system, midsagittal section through the pelvis.

The prostate is located between the bladder and urogenital

diaphragm. The penis includes the urethra and thus serves

for both ejaculation and micturition. The internal (involuntary) and external (voluntary) urethral sphincters are widely

separated. The ureter, having crossed the ductus deferens,

enters the urinary bladder at its base. The peritoneum is

reflected off of the posterior surface of the bladder and

Male urogenital system (schematic drawing). onto the rectum, thus forming the rectovesical pouch.

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Male Genital Organs (isolated)

Male genital organs, isolated (right lateral aspect).

Positions of male genital organs (right lateral aspect).

(Schematic drawing.)

Male genital organs in situ (right lateral aspect).

1 Ureter

2 Seminal vesicle

3 Prostate gland

4 Urogenital diaphragm and membranous part of urethra

5 Bulbo-urethral or Cowper’s gland

6 Bulb of penis

7 Left and right crus penis

8 Epididymis

9 Testis

10 Urinary bladder

11 Apex of urinary bladder

12 Ductus deferens

13 Corpus cavernosum of penis

14 Corpus spongiosum of penis

15 Glans penis

16 Ampulla of rectum

17 Levator ani muscle

18 Anal canal and external anal sphincter muscle

19 Spermatic cord (cut)

20 Sacral promontory

21 Sigmoid colon

22 Peritoneum (cut edge)

23 Rectovesical pouch

24 Ejaculatory duct

25 Lateral umbilical fold

26 Medial umbilical fold

27 Deep inguinal ring and ductus deferens

28 Pubic symphysis

29 Prostatic part of urethra

30 Spongy urethra

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Male Genital Organs (isolated)

1 Ureter

2 Ductus deferens

3 Interureteric fold

4 Ureteric orifice

5 Seminal vesicle

6 Trigone of bladder

7 Prostatic urethra with seminal colliculus

and urethral crest

8 Deep transverse perineal muscle

9 Membranous urethra

10 Spongy urethra

11 Mucous membrane of urinary bladder

12 Internal urethral orifice and uvula of bladder

13 Prostate

14 Prostatic utricle

15 Right and left corpus cavernosum of penis

16 Ejaculatory duct

17 Sphincter urethrae muscle

18 Median umbilical fold with remnant of urachus

19 Medial umbilical fold with remnant of

umbilical artery

20 Urinary bladder

21 Rectovesical pouch

22 Rectum

23 Sacrum

24 Deep iliac circumflex artery

25 Deep inguinal ring and ductus deferens

26 External iliac artery and vein

27 Femoral nerve

28 Obturator nerve and internal iliac artery

29 Ilium and sacrum

30 Inferior epigastric artery

31 Iliopsoas muscle

Male urogenital organs, isolated (anterior aspect). Urinary bladder, prostate,

and urethra have been opened. The urinary bladder is contracted.

Pelvic cavity in the male (viewed from above). Posterior half of male urethra and prostate in

continuity with neck of bladder (anterior aspect).

Male Genital Organs (isolated) 339

1 Apex of urinary bladder with

urachus

2 Urinary bladder

3 Ureter

4 Ductus deferens

5 Ampulla of ductus deferens

6 Seminal vesicle

7 Prostate

8 Bulbo-urethral or Cowper’s gland

9 Bulb of penis

10 Crus penis

11 Corpus spongiosum of penis

12 Corpus cavernosum of penis

13 Testis and epididymis with coverings

14 Glans penis

15 Fundus of bladder

16 Head of epididymis

17 Testis

18 Mucous membrane of bladder

19 Trigone of bladder

20 Ureteric orifice

21 Internal urethral orifice

22 Seminal colliculus

23 Prostate

24 Prostatic urethra

25 Membranous urethra

26 Spongy (penile) urethra

27 Skin of penis

28 Deep dorsal vein of penis (unpaired)

29 Dorsal artery of penis (paired)

30 Tunica albuginea of corpora

cavernosa

31 Septum of penis

32 Deep artery of penis

33 Tunica albuginea of corpus

spongiosum

34 Deep fascia of penis

Male genital organs, isolated (posterior aspect).

Urinary bladder, urethra, and penis

(anterior aspect, opened longitudinally).

Cross section of penis (inferior aspect).

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Male external genital organs with penis, testis, and spermatic cord, superficial layers (anterior aspect).

Vessels of male genital organs (schematic drawing).

A = lateral aspect; B = cross section of penis.

1 Femoral nerve

2 Femoral artery and vein

3 Femoral branch of genitofemoral nerve

4 Spermatic cord with genital branch

of genitofemoral nerve

5 Penis with deep fascia

6 Great saphenous vein

7 Cremaster muscle

8 Testis with cremaster muscle

9 Superficial inguinal ring

10 Internal spermatic fascia (cut edge)

11 Ilio-inguinal nerve

12 Left spermatic cord

13 Pampiniform venous plexus

14 External spermatic fascia

15 Superficial dorsal vein of penis

Male External Genital Organs

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Male External Genital Organs 341

Male external genital organs with penis, testis, and spermatic cord, deeper layers (anterior aspect).

The deep fascia of the penis has been opened to display the dorsal nerves and vessels.

Male genital organs (arteriography, lateral aspect). Arrow = helicine artery.

16 Glans penis

17 Testicular vein

18 Testicular artery

19 Deep dorsal vein of penis

20 Dorsal artery of penis

21 Helicine arteries

22 Prepuce

23 Testis with tunica albuginea

24 Ductus deferens

25 Ureter

26 Urinary bladder

27 Seminal vesicle

28 Prostate

29 Vesicoprostatic venous plexus

30 Deep artery of penis

31 Artery of bulb of penis

32 Internal pudendal artery

33 Corpus spongiosum of penis

34 Corpus cavernosum of penis

35 Urethra

36 Cremasteric fascia with cremaster muscle

37 Dorsal nerve of penis

38 Epididymis

39 Tunica vaginalis (visceral layer)

40 Tunica vaginalis (parietal layer)

41 Testis with vascular loops

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