Male Internal Genitalia

Question 0

Seminiferous Tubules

Answer 0

Structure: convoluted microscopic tubes

Located inside each testis

Function: production of sperm (spermatogenesis)

Question 1

Testicles

Answer 1

Structure: twin egg shaped structure

Located inside each testis

Function: production of sperm (spermatogenesis)

Question 2

Sperm

Answer 2

Structure: head: contains genetic information
Tail: mobility

Location: produced in seminiferous tubules in testis

Function: fertilization of ovum
*each man produces about 100 million sperm per day

Question 3

Interstitial cells

Answer 3

Located between seminiferous tubes in testis

Function/ create sex hormones

Question 4

Epididymis

Answer 4

Structure: convoluted tube

Location: one on each testicle

Function: site of sperm maturation and storage

Question 5

Vas Deferens (Vas)

Answer 5

Tube

Located in between the epididymis and the ejaculatory duct

Function: transport and storage of mature sperm from the epididymis to the ejaculatory duct

Question 6

Ejaculatory Duct

Answer 6

Structure: formed by the junction of the vas and the duct of the seminal vesicles

Function: empties into urethra within the prostate

Question 7

Prostate gland

Answer 7

Structure: single gland slightly larger than a walnut

Located at the base of the bladder that surrounds the urethra

Function: prostate secretions ( a cloudy alkine fluid) are a major component of semen

Question 8

Seminal Vesicles

Answer 8

Two glands

Situated to either side if the prostate (located behind the bladder(

Function: not storage areas for sperm add their own secretions to semen

Question 9

Bulbourethral Glands & pre-cum (chowper’s glands)

Answer 9

Two pea sized glands

Located near the root if the penis ( below the prostate gland)

Function: their secretions (often called pre-cum) are excreted prior to ejaculation