Male reproductive anatomy

Question 1

Testes

Answer 1

Lie within scrotum, thin rugose pigmented pouch- no SC fat but the dartos muscle
Left testis lies lower than right, both covered by white fibrous ( tunica albuginea)

Question 2

Testes- structure

Answer 2

200-300 lobules each containing 1-3 seminiferous tubules (site of spermatogenesis)
SF anastamose into plexus called rete testis, where appx. 12 ducts rice, piercing TA and into epididymal head

Question 3

Blood supply and venous drainage of testes

Answer 3

Each testis receives supply from testicular artery
Venous drainage of each via pampiniform plexus of veins- becomes the singular testicular vein
RTV> inferior vena cava
LTV drains into left renal vein

Question 4

The epididymis

Answer 4

Located along post. border of testis, site of sperm storage/maturation until ejaculation
Has head, body and tail
Tail continuous w. vas deferens

Question 5

The spermatic cord

Answer 5

External spermatic fascia- from ext. oblique aponeurosis
Cremasteric spermatic fascia- from int. oblique aponeurosis
Internal spermatic fascia- from transversalis fascia

Question 6

Spermatic cord structural contents

Answer 6

• Testicular, cremasteric arteries and artery of the vas
• Pampiniform vein plexus, cremasteric vein and vein of the vas
• Nerve of cremaster muscle, sympathetic fibres and ilio-inguinal nerve
• Vas deferens and lymphatic vessels

Question 7

Prostate gland

Answer 7

Pyramidal shaped organ surrounding prostatic urethra

Question 8

Relations of the prostate gland

Answer 8

Sup- bladder neck
Inf- apex of PG lies on ext. sphincter of bladder
Ant- pubic symphysis
Post- rectum
Lat- levator ani

Question 9

Seminal vesicles

Answer 9

Coiled, sacculated tubes which lie at base of bladder

Ducts from seminal vesicle joins with VD to form ejaculatory duct, each travels through prostate gland

Question 10

Urethral divisions

Answer 10

Pre-prostatic- vert. through bladder wall
Prostatic- through prostate gland
Membranous- pierces ext. sphincter urethrae (voluntary one)
Spongy- tranverses corpus spongiosum
During ejaculatino semen passes through PG and urethra, exit through urinary meatus

Question 11

Levator ani muscles

Answer 11

Iliococcygeus
Pubococcygeus
Puborectalis
Obturator canal