Male reproductive system (24)

Question 1

The male gonads

Answer 1

Testis

Question 2

Testis

Answer 2

paired structure, suspended in the scrotum by the spermatic cords

Question 3

Source of male hormones

Answer 3

mainly testosterone and site of spermatogenesis

Question 4

Sperm are formed in the

Answer 4

Seminiferous tubules

Densely packed- average testis contains 400-600 seminiferous tubules

Question 5

Blood supply by

Answer 5

testicular arteries and veins

R. testicular vein drains in IVC
L. testicular vein drains into L renal vein

Question 6

Elongated structure on the posterior surface of the testis (uncoiled, 6m long)

Answer 6

Epididymis

Head (most superior)
Body (convoluted duct)
Tail (continuous with ductus deferens)

STORES SPERM UNTIL MATURE

Question 7

Muscular tube that transports sperm from testis to the urethra during ejaculation

Answer 7

Ductus Deferens

Question 8

The ductus deferens along with the testicular artery and pam-uniform plexus of veins are the main structures located…

Answer 8

within the spermatic cord which courses through the male inguinal canal

Question 9

During the course of the ductus deferens,

Answer 9

no other structure intervenes between it and the perineum

Question 10

The ductus deferens narrows and joins the duct of the seminal gland to form the

Answer 10

ejaculatory duct

Question 11

Seminal vesicles (R and L)

Answer 11

densely coiled blind tubes (15cm) located posterior to the base of the bladder, lateral to the corresponding ductus deferens

Question 12

The seminal vesicles contribute a viscous fluid

Answer 12

rich in fructose (to nourish perm) and prostaglandin fluid (to help stimulate uterine contractions) which form about 70% of semen

Question 13

The short duct of the seminal vesicle joins the

Answer 13

ampulla of the ductus deferens to form the ejaculatory duct

Question 14

A slender tube that arises by the union of the duct of a seminal gland with the ductus defers

Answer 14

Ejaculatory Ducts

Courses through the tissue of the prostate gland to open into the prostatic urethra

Question 15

Largest accessory organ of the male reproductive tract (size of chestnut)

Answer 15

Prostate Gland

Question 16

A cone-shaped gland with a broad base that contracts the bladder and surrounds the prostatic urethra

Answer 16

Prostate gland

Question 17

Prostate gland contributes

Answer 17

thin, milky fluid rich in substances that enhance sperm motility and enzymes that clot and liquefy semen (20-30% total seminal volume)

Question 18

The prostate gland and seminal vesicles are supplied by branches of the

Answer 18

internal iliac a; venous blood drains to the prostatic and then to the internal vertebral venous plexus

Question 19

Autonomic innervation is via the

Answer 19

Prostatic plexus

Question 20

The male organ of copulation, erect in anatomical position

Answer 20

The penis

Question 21

The body (shaft) of the penis is formed by

Answer 21

3 cylindrical erectile bodies bound together by a dense connective tissue sheath (Buck’s fascia)

Question 22

Corpora Cavernosa

Answer 22

R and L (single)

Question 23

Corpus Spongiosum

Answer 23

unpaired midline structure

Terminates distally as the glans (head) of the penis

Traversed by the penile (spongy) urethra which opens onto the glans at the external urethral meatus

Question 24

Prepuce (foreskin)

Answer 24

Loose hood of skin and fascia that extends distally around glans

Male circumcision is a surgical procedure to remove the prepuce