Male Reproductive System

Question 1

main purposes

Answer 1

make sperm: male gamete, genetic information
transportation system: testis, series of ducts
deposit system: deposit sperm into the female system
produce male hormones: testosterone (t4)

Question 2

seminal vesicle

Answer 2

produce the majority of fluid that makes up semen
(semen = seminal plasma (98%) and sperm (2%)

Question 3

ejaculatory duct

Answer 3

delivers sperm into the urethra

Question 4

rectum

Answer 4

behind seminal vesicle

Question 5

bladder

Answer 5

above prostate

Question 6

prostate

Answer 6

produce the fluid that nourishes and transports sperm (seminal fluid)

Question 7

vas deferens

Answer 7

transports sperm to the urethra in preparation for ejaculation

Question 8

urethra

Answer 8

tube in the penis, urine, pre-cum which clears our tract prior to ejaculation

Question 9

erectile tissue

Answer 9

allows the penis to become hard during erection

Question 10

penis

Answer 10

root, shaft, glans

Question 11

glans penis

Answer 11

tip of the penis, the most sensitive

Question 12

prepuce/foreskin

Answer 12

protects the head of the penis

Question 13

testis

Answer 13

makes sperm and produces testosterone

Question 14

scrotum

Answer 14

protects testes, helps thermoregulation, keeps them several degrees below the average body temperature which is important for sperm production

Question 15

epididymis

Answer 15

transport sperm from rete testes to the vas deferens, sperm storage and maturation

Question 16

bulbourethra/ cowper’s gland

Answer 16

produces precum, neutralize traces of acidic urine in the urethra

Question 17

sertoli cells

Answer 17

nurse cells for sperm

Question 18

spermatogenesis

Answer 18

64 days,
spermatogonial stem cell
spermatogonium
primary spermatocyte
Meiosis I
secondary spermatocyte
Meiosis II
Early spermatid
sperm cell

Question 19

spermatosoa

Answer 19

tail/flagella, head (mitochondria in neck for power)

Question 20

head of sperm

Answer 20

nucleus, highly condensed DNA, acrosome (enzyme)

Question 21

penis consists of

Answer 21

skin, collagen
3 tubes
corpus cavernosum
corpus spongiosum
urethra

Question 22

thermoregulation

Answer 22

testis outside of the body
2-3 degrees below body temp is best for spermatogenesis

Question 23

cremaster muscle

Answer 23

raises testicles

Question 24

Production of testosterone

Answer 24

in testes, lydis cells makes t4
support sperm production
muscle growth
increase libido

Question 25

steroids

Answer 25

testosterone, estrogen, progesterone, cortisone (based on cholesterol)

Question 26

dihydrotestosterone

Answer 26

twice as powerful as t4
localized effect
2nd sex characteristics
male hair pattern
- beard growth
- pubic hair