Male Reproductive anatomy

Question 1

Describe the skin of the testes?

Answer 1

• Thin
• Rugose
• Pigmented
• Contains dartos muscle but no fat

Question 2

Which testes usually lies lower?

Answer 2

Left

Question 3

What is the white fibrous capsule which covers the testes?

Answer 3

Tunica albuginea

Question 4

What does the spermatic cord travel through?

Answer 4

Inguinal canal passes through inguinal ring

Question 5

Describe structure of the testes?

Answer 5

• Made up of lobules 200-300
• each lobule contains seminiferous tubules (site of spermatogenesis)
• seminiferous tubule anastomose into plexus called rete testis
• efferent ducts arise from Rete testis these ducts pass into the epididymis (piercing tunica albuginea)

Question 6

What blood vessels supply the testes?

Answer 6

• Testicular artery branch of inferior mesenteric
• Testicular veins which splits into plexus of veins called pampiniform plexus
• Right testicular vein drains to the IVF
• Left testicular vein drains to the left renal vein

Question 7

What are the parts of the epididymus?

Answer 7

Head, body and tail
head is only section attached to testes
tail is continuous with vas deferens

Question 8

Where is the epididymus located?

Answer 8

Posterior border of each testes

Question 9

What is the function of the epididymus?

Answer 9

sperm storage and maturation until ejaculation

Question 10

What are the three fascial layers of the spermatic cord?

Answer 10

• External spermatic fascia
• Cremasteric fascia
• Internal spermatic fascia

Question 11

What structures are in the spermatic cord?

Answer 11

• Testicular artery, cremasteric artery and artery of vas
• Pampiniform plexus of veins, cremasteric vein and vein of vas
• Vas deferens
• cremaster muscle nerve, sympathetic fibres and ilio-inguinl nerve
• lymphatic vessels

Question 12

What muscle is in the spermatic cord?

Answer 12

Cremaster muscle

Question 13

What are the relations of the prostate?

Answer 13

inferior to the bladder 
posterior to pubic symphysis 
anterior to rectum 
medial to levator ani muscle 
superior to external sphincter of bladder

Question 14

what are the seminal vesicles?

Answer 14

• coiled, sacculated tubes which lie at base of bladder
• join with the vas deferens to form ejaculatory ducts which then travel through the prostate where they join the urethra

Question 15

What are the parts of the urethra?

Answer 15

• Pre-prostatic: passes vertically through bladder
• Prostatic: travels through prostate gland
• Membranous: pierces external sphincter urethrae
• Spongy: traverse the corpus spongiosum of penis

Question 16

What are the parts of the penis?

Answer 16

Root - not visible externally
Body - free part i.e. not attached to other structures
Glans

Question 17

How many columns of erectile tissues are found in the penis?

Answer 17

Three

• corpus cavernosa x2, right and left (arise at crura)
• corpus spongeosum (arises at bulb)

Question 18

What are the muscles of the pelvic floor?

Answer 18

Levator ani muscles:

• iliococcygeus
• pubococcygeus
• puborectalis
• coccygeus

Question 19

Where does lymph from bladder, prostate and majority of penis drain to?

Answer 19

internal iliac nodes

Question 20

Where does semen exit from?

Answer 20

Urinary Meatus

Question 21

What are the glands below the prostate which contribute secretions to semen?

Answer 21

Bulbo-urethral glands

Question 22

What occurs to the erectile tissue during erection?

Answer 22

Fill with blood

Question 23

What blood vessels supply the penis?

Answer 23

• dorsal artery penis
• deep artery penis
  arise from internal pudendal artery

Question 24

Where does the lymph from the penis drain to?

Answer 24

Internal iliac majority and deep inguinal at glans and part of body