Anatomy of the Male Reproductive System

Question 1

What is the temperature of the testis, and what is it essential for?

Answer 1

• 3-5 °C
• essential for: sperm production

Question 2

What does the body of the penis composed of?

Answer 2

3 cylinders of erectile tissue enclosed in a tubular sheath of fascia (Buck)

Question 3

What is the function of the ejaculatory ducts?

Answer 3

drain seminal fluid into the prostatic urethra

Question 4

What covers the epididymis?

Answer 4

TUNICA VAGINALIS covers it with the exception of the posterior border

Question 5

What does the parietal layer of the scrotum cover?

Answer 5

the inner aspect of the scrotal wall

Question 6

Describe the epididymis?

Answer 6

single long coiled duct that courses align the posterolateral side of the testis

Question 7

what is the testes venous drainage?

Answer 7

pampiniform plexus, they combine and form testicular vein

Question 8

What functions does the cremasteric reflex has?

Answer 8

protective and thermoregulatory testicular functions

Question 9

What are the structures contained inside the scrotum?

Answer 9

external spermatic fascia

testes

epididymis

spermatic cord

Question 10

Where do the testes develop, and where do they move into?

Answer 10

develop in the abdomen and move into the scrotum before birth

Question 11

What is the lymphatic drainage of epididymis?

Answer 11

Para-aortic lymph nodes

Question 12

What is the erectile tissue made up of?

Answer 12

two dorsally placed corpora cavernosa and a single corpus spongiosum applied to her ventral surface.

Question 13

What arteries play a significant role in supplying blood to the scrotum?

Answer 13

• external PUDENDAL branches arising from the femoral arteries
• SCROTAL branches of the internal pudendal arteries

Question 14

The bulb of the penis is proximal and anchored to?

Answer 14

proximal to corpus spongiosum

anchored to: perineal membrane

Question 15

What veins drain the penis?

Answer 15

Drain into the internal pudendal veins.

Question 16

Where does the contents of the scrotum drains (lymphatic drainage)?

Answer 16

drain to the lumbar lymph nodes

Question 17

Where does the ejaculatory duct penetrate through?

Answer 17

PROSTATE GLAND to connect with the prostatic urethra

Question 18

(anterior innervation) cremaster muscle and anterior scrotum are innervated by?

Answer 18

genitofemoral nerve (L1-L2 segments of the lumbosacral plexus)

Question 19

What is the innervation of the testes?

Answer 19

lesser splanchnic nerve (T10) & genital branch of genitofemoral nerve

Question 20

Where is the scrotum located?

Answer 20

thin external sac that is located under the penis

Question 21

What is the nerve supply of the penis, sensation and erectile?

Answer 21

Sensation: Pudendal Nerve & Pelvic Plexuses

Erectile:
• Parasympathetic (excitatory)
• Sympathetic (inhibitory)

Question 22

All arterials that supply the penis are branches of?

Answer 22

INTERNAL PUDENDAL ARTERY

Question 23

What is the testis path, and how does it help in lymphatic drainage?

Answer 23

• testes migrate from the abdominal wall through the inguinal canal and into the scrotum
• the testis will drag its blood supply and lymph vessels into the scrotal sac

Question 24

What does the visceral layer of the scrotum coat?

Answer 24

the testis and epididymis

Question 25

What is the **venous drainage** of the **epididymis?**

Answer 25

Pampiform Plexus that reduces into a single vein that ascends through the inguinal canal.

Question 26

Testes arterial blood supply?

Answer 26

testicular arteries, stem from abdominal aorta

Question 27

What nerves innervate the cremasteric reflex?

Answer 27

**ilioinguinal** **genitofemoral nerves**

Question 28

What is the testes lymphatic drainage?

Answer 28

para-aortic lymph nodes

Question 29

What innervates the **pudendal**?

Answer 29

posterior innervation

Question 30

What are the testes covered by?

Answer 30

**TUNICA VAGINALIS** **TUNICA ALBUGINEA:** a fibrous capsule

Question 31

Describe ejaculatory ducts..

Answer 31

* less than 1 inch long * formed by: union of **Vas Deferens,** and **duct of seminal vesicle** * pierve posterior surface of prostate and open prostratic part of urethra

Question 32

Where is the prostate located?

Answer 32

* **Inferior:** to bladder * **above:** to urogenital diaphragm * **posterior:** to pubic symphysis * **anterior:** torectum

Question 33

Structures of prostate?

Answer 33

Enclose within thin dense fibrous capsule. Inner loose sheat derived from pelvic fascia.

Question 34

Arterial blood supply for penis?

Answer 34

**corpora cavernosa:** deep arteries of the penis **corpus spongiosum**: artery of the bulb **dorsal artery** of the penis

Question 35

What is the lymph drainage of the penis?

Answer 35

**skin of the penis:** medial group of superficial inguinal nodes **deep structures:** internal iliac nodes.

Question 36

Where does the **wall of the scrotum** drains (lymphatic drainage)?

Answer 36

into the **superficial inguinal lymph nodes**

Question 37

At its distal extremity the corpus spongiosum expands to...

Answer 37

to form the **gland penis** which covers the distal ends.

Question 38

What is the scrotum composed of?

Answer 38

skin and smooth muscle

Question 39

What is the terminal part of the vas deferens?

Answer 39

dilated to form the **AMPULA OF THE VAS DEFERENS**

Question 40

What is the penis?

Answer 40

lo que me da marcos jajajja jk Pendulous organ suspended from the front and sides of the pubic arch and containing the greater part of the urethra.

Question 41

What is the scrotum wall thickness?

Answer 41

8 mm

Question 42

What is the left testis level?

Answer 42

lies at lower level

Question 43

What is the **function of the scrotum**?

Answer 43

* protect the testes * helps with thermoregulation * keeps testis temperature

Question 44

What is the ductus deferens?

Answer 44

**Long muscular duct** that **transports the spermatozoa from the tail of the epididymis** to the **ejaculatory duct**.

Question 45

The root of the penis consits of?

Answer 45

**2 crura:** they are _proximal_ of **corpora cavernosa** **attached to:** pubic arch & bulb of penis

Question 46

What shape are the testes?

Answer 46

Ellipsoid shape

Question 47

What is the **epididymis arterial blood supply**?

Answer 47

**Testicular Artery,** branch of the Abdominal Aorta