Male Reproductive System - Duct System

Question 1

What structures form the duct system of the MRS?

Answer 1

Epididymis
Vas Deferens
Urethra

Question 2

Location of epididymis

Answer 2

Superior part of the testis and along the posterior lateral side

Question 3

Functions of the epididymis

Answer 3

Mature and store sperm cells
Expels sperm with the contraction of muscles

Question 4

Parts of the testes

Answer 4

Upper part: Head (Contain highly coiled efferent ductules)
Middle part: Body (Contain a single duct of epididymis)
Lower part: Tail (Contain single duct of epididymis)

Lower part becomes continuous with the vas deferens

Question 5

What artery is supplies the epididymis and duct ?

Answer 5

Testicular artery

Question 6

Nerve supply of the epididymis

Answer 6

Testicular plexus derived from T11 to L1

Question 7

Characteristics of the vas deferens

Answer 7

Carries sperm from the epididymis to the ejaculatory duct
Passes over the bladder
Moves sperm by peristalsis
Ends in the ejaculatory duct which unites with the urethra
Expanded end is called the ampulla

Question 8

What are the parts of the ductus deferens?

Answer 8

External
Internal

Question 9

Course of the external part of ductus deferens

Answer 9

Starts at lower pole of testis as continuation of the epididymis (within the spermatic cord)
Moves through inguinal canal

Inguinal canal is a suitable site for vasectomy

Question 10

Course of the internal part of the vas deferens

Answer 10

Runs along lateral wall of pelvis
Continues along base of urinary bladder
Joined by the seminal vesicle to form ejaculatory duct which empties into prostatic urethra

Question 11

Extent of urethra

Answer 11

Base of urinary bladder to tip of penis

Question 12

Regions of the urethra

Answer 12

Prostatic
Membranous
Spongy/penile/bulbous