Lesson 20 - Male Reproductive System

Question 1

reproductive system

Answer 1

consists of primary and secondary sex organs

Question 2

primary sex organs

Answer 2

the gonads

Question 3

secondary sex organs

Answer 3

organs other than the gonads that are necessary for reproduction

Question 4

external genitalia is located..

Answer 4

in the perineum

Question 5

internal genitalia is located

Answer 5

in the pelvic cavity

Question 6

male and female structures that develop from the same embryonic structures are ______

Answer 6

homologous

Question 7

the penis is homologous to the…

Answer 7

clitoris

Question 8

the scrotum is homologous to the…

Answer 8

labia majora

Question 9

male external genitalia (2)

Answer 9

scrotum and penis

Question 10

scrotum

Answer 10

pouch of skin, muscle, and fibrous connective tissue containing the testes

Question 11

deep to the skin of the scrotum is _____ _____

Answer 11

dartos fascia

Question 12

dartos fascia

Answer 12

layer of smooth muscle and connective tissue within the scrotum

Question 13

dartos muscle

Answer 13

smooth muscle layer within the dartos fascia

Question 14

the internal ______ _______ divides the scrotum into right and left compartments

Answer 14

median septum

Question 15

perineal raphe

Answer 15

medial seam on the scrotum surface that marks the location of the median septum; extends anteriorly along the ventral side of the penis and posteriorly to the anus

Question 16

the spermatic cord continues through the _____ _____ into the pelvic caivty

Answer 16

inguinal canal

Question 17

within the scrotum, the spermatic cord is enmeshed in strips of internal oblique muscle called the ______

Answer 17

cremaster

Question 18

when it is cold, what does the cremaster muscle do?

Answer 18

it contracts to hold the testes closer to the body (opposite when hot)

Question 19

when it is cold, what does the dartos fascia do?

Answer 19

contracts, wrinkling the scrotum and holding testes against the body

Question 20

interstitial endocrine cells secrete

Answer 20

testosterone

Question 21

each seminiferous tubule is lined with a think ______ epithelium

Answer 21

germinal

Question 22

layers of the germinal epithelium (2)

Answer 22

• layers of germ cells (developing sperm)
• tall nurse cells (supporting cells, sustentacular)

Question 23

nurse cells, aka (2)

Answer 23

supporting cells, sustentacular cells

Question 24

nurse cells secrete proteins…(2)

Answer 24

androgen-binding protein and inhibin to regulate sperm production

Question 25

tight junctions between nurse cells form the....

Answer 25

blood-testis barrier

Question 26

the blood-testis barrier prevents...

Answer 26

antibodies and immune cells from attacking germ cells

Question 27

spermatic ducts include... (4)

Answer 27

- efferent ductules - duct of the epididymis - ductus deferens - ejaculatory duct

Question 28

seminal vesicles

Answer 28

pair of glands posteior to the bladder that empty into the ejaculatory ductpr

Question 29

prostate

Answer 29

secretes a thin milky secretion that forms 30% of semen

Question 30

bulbourethral glands

Answer 30

produce a clear, slippery fluid (pre-ejacualte) that lubricates the head of the penis in preparation for intercourse; protects sperm from residual urethra

Question 31

benign prostatic hyperplasia (BPH)

Answer 31

non-cancerous enlargement of the prostate; compresses urethra and obstructs flow of urine making it harder to completely empty bladder

Question 32

prostate cancer

Answer 32

typically unnoticed but painful

Question 33

how do they check for prostate cancer? (4)

Answer 33

- digital rectal exam - palpate through rectal wall - elevated levels of serine protease (PSA) - elevated levels of acid phosphatase

Question 34

the adult prepuce of the penis remains anchored to the glands by the _____

Answer 34

frenulum

Question 35

trabeculae

Answer 35

partitions between the cavernous spaces of the penis

Question 36

reproductive function in males is regulated by...

Answer 36

hypothalamo-pituitary-gonadal axis

Question 37

in men, follicle-stimulating hormone stimulates...

Answer 37

nurse cells to secrete androgen-binding protein (ABP) that binds testosterone and stimulates spermatogenesis

Question 38

in men, luteinizing hormone stimulates...

Answer 38

interstitial endocrine cells to produce androgens, primarily testosterone

Question 39

why does testosterone secretion decline with age?

Answer 39

due to a decline in the number and activity of interstitial endocrine cells

Question 40

andropause

Answer 40

male climacteric; symptoms of decreasing testosterone