M28: Male Reproductive System II

Question 1

where are mitochondria for sperm found

Answer 1

middle section (midpiece) of tail

Question 2

rete testes

Answer 2

central section of testicle
- starts from seminiferous tubules, goes to epididymis

Question 3

movement of sperm from testes to vas deferens

Answer 3

seminiferous tubules
straight tubules
rete testes
efferent ducts
ductus epididymis
ductus (vas) deferens

Question 4

epididymis structure + function

Answer 4

structured
- lined with pseudo-stratified columnar epithelium
- layers of smooth muscle
- STEREOCILIA - microvili for reabsorption of degenerated sperm

function
- site of sperm maturation (2 weeks)
- storage 1-2 months
- propels sperm onward via peristaltic contration

Question 5

inguinal canal

Answer 5

where spermatic cord enters pelvic cavity

Question 6

seminal vesicles

Answer 6

pair of pouch-like organs posterior to base of bladder

secretes ALKALINE viscous fluid (60% of semen)
- neutralizes acidic male urethra and vagina
- fructose for ATP production
- PROSTAGLANDINS stimulate sperm motility and viability
- clotting pr- for coagulation of semen