Male Reproductive System

Question 1

the male reproductive system is a – system

Answer 1

closed

Question 2

produce sperm

Answer 2

male gonads (testes)

Question 3

sperm begin their development in the – of the testes, where they are nourished by Sertoli cells

Answer 3

seminiferous tubules

Question 4

the testes are housed in the – outside of the abdominal cavity, where the temperature is a few degrees cooler than body temperature

Answer 4

scrotum

Question 5

once in the epididymis, the sperm acquire – and are stored

Answer 5

mobility

Question 6

When ejaculation occurs, the sperm moves towards the urethra and enter the – which are tubes that move up into the abdominal cavity

Answer 6

vas deferens

Question 7

the two vas deferens merge into the – and then into the urethra

Answer 7

ejaculatory duct

Question 8

When sperm are moving through, the urethra it becomes unavailable to the –

Answer 8

bladder

Question 9

mixture of sperm and secretions

Answer 9

semen

Question 10

urethra progresses through the length of the –

Answer 10

penis

Question 11

provide a fluid rich in nutrients to serve as an energy source for the sperm

Answer 11

seminal vesicles

Question 12

wraps around the urethra and deposits a secretion that is alkaline, to balance the acidic environment of the vagina

Answer 12

prostate gland

Question 13

secrete a fluid prior to ejaculation that may serve to lubricate the urethra for sperm passage

Answer 13

bulbourethral glands

Question 14

the process of – produces sperm through meiosis

Answer 14

spermatogenesis

Question 15

meiosis in men results in –

Answer 15

four small sperm cells

Question 16

spermatogenesis requires the hormonal influence of testosterone and begins at –

Answer 16

puberty

Question 17

testosterone is secreted during – to cause the development of male reproductive structures, but testosterone development is halted until puberty

Answer 17

embryonic development

Question 18

diploid cells in the testes called – differentiate into primary spermatocytes which undergo meiosis I producing two haploid secondary spermatocytes

Answer 18

spermatogonia

Question 19

secondary spermatocytes undergo meiosis II to produce –

Answer 19

four mature sperm (spermatozoa)

Question 20

spermatozoa move to the – to mature

Answer 20

epididymis

Question 21

spermatogenesis takes about – to complete

Answer 21

2-3 months

Question 22

mature sperm contain an acrosome that contains – used to penetrate the egg

Answer 22

digestive enzymes

Question 23

mature sperm contain a – that contains the nucleus of the sperm that will contribute to the egg

Answer 23

head

Question 24

mature sperm contain a – that is propelled by ATP

Answer 24

tail (flagellum)

Question 25

– from the hypothalamus allows for the secretion of LH and FSH from the anterior pituitary

Answer 25

GnRH

Question 26

LH causes the production of – by cells in the testes

Answer 26

testosterone

Question 27

testosterone is needed to stimulate –

Answer 27

spermatogenesis

Question 28

– is needed to make the potential sperm cells sensitive to testosterone

Answer 28

FSH

Question 29

the levels of testosterone regulate sperm production as if it were a

Answer 29

thermostat

Question 30

once sperm are in the –, the three glands add their secretions to the sperm as they pass by

Answer 30

urethra