male reproductive system

Question 1

what makes up the reproductive organs?

Answer 1

• testis (primary sex organs)
• epididymis; vas deferens; urethra (ducts)
• prostate gland (accessory glands)
• penis (external genitalia)

Question 2

scrotum

Answer 2

• contains testis
• temperature regulator
• house and protects

Question 3

testis

Answer 3

• embryonic stage (in abdominal cavity)
• lobules (compartments) containing highly convoluted tubules : seminiferous tubules
• germinal epithelium lines the tubules
• leydig (interstitial cells)
• sperm (germinal epithelium)
• testosterone (interstitial cells)

Question 4

epididymis

Answer 4

• seminiferous tubules
• mature sperm
• stores sperm

Question 5

vas deferens (sperm duct)

Answer 5

• continuation of epididymis
• pushes mature sperm forward to urethra
• strong peristaltic waves (contraction of smooth muscles)

Question 6

urethra

Answer 6

• uro-genital system
• leads to exterior
• transportation of semen and urine (never simultaneously)

Question 7

prostate gland

Answer 7

• surrounds urethra
• can slow down emptying of bladder
• secreted fluid which nourishes and helps in the transport of semen

Question 8

cowper’s gland

Answer 8

• base of penis
• produces alkaline mucus-like fluid
• neutralizes acidic urine
• lubricates urethra and external urethra opening to protect sperm

Question 9

penis

Answer 9

• spongy erectile tissue
• corpus cavernosa on dorsal side
• corpus spongiosum on ventral side
• dorsal blood vessels
• nerve
• central artery
• blood fills chambers (erection)
• deposits semen with sperm into vagina

Question 10

what is the distinctive difference about the human penis?

Answer 10

• only animal that has no erectile bone

- not attached to abdominal wall

Question 11

semen

Answer 11

• sperm (testis)

- seminal fluid (sperm duct and glands)