Male Genitalia

Question 1

What are the internal male genitalia?

Answer 1

Testis, epididymis, ductus deferens, accessory sex glands (prostate, seminal vesicles, bulbourethral glands)

Question 2

What are the external male genetalia?

Answer 2

Penis, scrotum and tunics of the testes

Question 3

Embryologically, where does the internal genitalia arise form?

Answer 3

Above the pelvic floor from the urogenital ridge

Question 4

Embryologically, where does the external genitalia arise from?

Answer 4

Urogenital sinus below the pelvic floor.

Question 5

What is the retrovesical pouch?

Answer 5

A peritoneal reflection from the posterior wall of the urinary bladder onto the anterior wall of the rectum.

Question 6

In the male, what is the lowest point in the abdominal cavity?

Answer 6

Retrovesical pouch

Question 7

Where is the sperm produced?

Answer 7

In the testis

Question 8

Which testis is usually the biggest?

Answer 8

The left

Question 9

On which side of the testis does the epididymis lie?

Answer 9

Posteromedial side

Question 10

What is the connective tissue investing each testis called?

Answer 10

Tunica albuginea

Question 11

What is the appendix of the testis a remnant of?

Answer 11

Müllerian duct

Question 12

What three parts does the epididymis consist of?

Answer 12

Head, body and tail

Question 13

What is the appendix of the epididymis a remnant of?

Answer 13

The mesonephros

Question 14

Does the testis and epididymis share the connective tissue?

Answer 14

No

Question 15

Where does the testes originally develop?

Answer 15

In the abdominal cavity

Question 16

What is the porcessus vaginalis testis?

Answer 16

A peritoneal diverticulum that guides the testis down into the scrotum

Question 17

Processus vaginalis testis will remain as what layer?

Answer 17

Tunica vaginalis of the testis

Question 18

What does the tunica vaginalis enclose?

Answer 18

It is a closed serous sheath that envelops the testis and epididymis. The visceral layer (epiorchium) lies on top of the tunica albuginea and cover those parts of the testes not covered by epididymis. It also covers most of the epididymis and reflects into the parietal layer (periorchium) at the exit site of the spermatic cord

Question 19

Between the epididymis and testis there is a sinus. What is it called

Answer 19

The sinus of the epididymis, bounded by the superior and inferior ligaments of the epididymis.

Question 20

The internal spermatic fascia is a continuation of what?

Answer 20

Transversals fascia

Question 21

What is the cremasteric fascia?

Answer 21

The internal spermatic fascia with muscle fibers from the cremaster muscle

Question 22

What is the cremasteric muscle a continuation of?

Answer 22

Internal abdominal oblique muscle

Question 23

The external spermatic fascia is an continuation of what?

Answer 23

Outer layer of the fascia of the abdominal wall, the fascia of the external oblique muscle of the abdomen

Question 24

What is the subcutaneous tissue of the scrotum devoid of?

Answer 24

Fat

Question 25

What is the dartos fascia?

Answer 25

Subcutaneous fascia

Question 26

From outer to inner, what are the layers of the coverings of the testis and epididymis?

Answer 26

Skin, dartos fascia, external spermatic fascia, cremasteric muscle (+ fascia), internal spermatic fascia, tunica vaginalis of the testes (epiorchium and periorchium), tunica albuginea

Question 27

From inner to outer, what are the layers that constitute the covering of the testis and the epididymis?

Answer 27

Tunica albuginea, tunica vaginalis of the testis (epiorchium and periorchium), internal spermatic fascia, cremasteric muscle + fascia, external spermatic fascia, dartos fascia and skin

Question 28

The testes and epididymis are supplied by which artery?

Answer 28

Testicular artery, which arises form the aorta

Question 29

The testicular artery anastomoses with which artery?

Answer 29

Artery to ductus deferens and cremasteric artery

Question 30

The artery to the ductus deferens is a branch of which artery?

Answer 30

Umbilical artery

Question 31

The cremasteric artery comes from which artery?

Answer 31

Inferior epigastric artery

Question 32

Which artery supplies the tunics of the testes?

Answer 32

Cremasteric artery

Question 33

The scrotum is supplied by which artery?

Answer 33

Internal pudendal artery

Question 34

Which vein drains the testes and epididymis?

Answer 34

Pampiniform venous plexus, which empties into the testicular veins

Question 35

Which nerve innervates the cremasteric muscle?

Answer 35

Genital branch of genitofemoral nerve

Question 36

The testes and epididymis is supplied by which nerve?

Answer 36

Celiac plexus accompanying the arteries.

Question 37

Where does the ductus deferens open into?

Answer 37

Ejaculatory duct in the prostatic urethra

Question 38

The ductus deferens is supplied by which artery?

Answer 38

Artery to ductus deferens from the umbilical artery

Question 39

Venous drainage of the ductus deferens?

Answer 39

Pampiniform plexus and prostatic venous plexus

Question 40

Which nerve innervates the ductus deferens?

Answer 40

Inferior hypogastric nerve plexus

Question 41

What are the parts of the ductus deferens?

Answer 41

- scrotal part - funicular part - inguinal part - pelvic part

Question 42

What are the contents of the spermatic cord?

Answer 42

- Ductus deferens - Testicular artery and vein - Artery to ductus deferens - Pampiniform plexus - Autonimic nerves - Genital branch of genitofemoral nerve

Question 43

What are the layers of the spermatic cord?

Answer 43

Skin, dartos muscle, external spermatic fascia, cremaster muscle and internal spermatic fascia

Question 44

Which side of the prostate faces the rectum?

Answer 44

Its posterior side

Question 45

The inferolateral surface of the prostate faces which nerve plexus?

Answer 45

Inferior hypogastric nerve plexus

Question 46

What structures pierces the prostate?

Answer 46

Ejaculatory duct and urethra

Question 47

Which arteries supplies the seminal vesicle?

Answer 47

Inferior vesicular artery, artery to ductus deferens and middle rectal artery

Question 48

Which arteries supplies the prostate?

Answer 48

Internal pudendal artery, inferior vesicular artery and middle rectal artery

Question 49

The prostatic venous plexus drains what structures?

Answer 49

Prostate and seminal vesicles. It empties into internal iliac vein