chapter 6

Question 1

male external sex organs

Answer 1

• the penis

- scrotum

Question 2

what might be a reason that boys are typically more comfortable with their genitalia than girls

Answer 2

• testes are visible
• ovaries are internal
• penis is typically held during urination

Question 3

contains the urethra for urine and semen transport

becomes erect to better penetrate the vagina and deposit sperm near the os

no bone little muscle

composed of 3 cylinders of erectile tissue

Answer 3

the penis

Question 4

3 cylinders of erectile tissue

Answer 4

2 corpora cavernosa
corpus spongiosum ( contains urethra)

Question 5

a fold of skin that can cover part or all the glans; retracts over the corona during an erection

Answer 5

foreskin

Question 6

surgical removal of the foreskin; most common male surgery in the US; religious/ cultural ritual

Answer 6

circumcision

Question 7

any type of stimulation perceived as sexual can cause this

spinal reflex

can occur while asleep

veins compress to prevent exit of blood

Answer 7

erection

Question 8

flaccid state returns when

Answer 8

arteries constrict and the veins open to allow blood to flow out

Question 9

is the penis a muscle?

Answer 9

yes

Question 10

can you break a penis ?

Answer 10

yes

Question 11

loose, wrinkled pouch beneath the penis containing the testicles

lightly covered with pubic hair

functions to keep the testicles 3 degrees cooler than the body’s temperature to keep sperm viable

Answer 11

the scrotum

Question 12

what is the most important male hormone

Answer 12

testosterone

Question 13

productions of sperm in testes

Answer 13

spermatogenesis

Question 14

produce and store sperm

Answer 14

seminiferous tubules

Question 15

provide nutrition for the development of sperm

Answer 15

sertoli cells (in the tubules )

Question 16

what propels the mature sperm/?

Answer 16

flagellum

Question 17

how many days does sperm production take ?

Answer 17

72 days

but it is constant

Question 18

______form the compact head covered by an acrosome that contains enzymes to penetrate the egg

Answer 18

spermatids

Question 19

18 in tube that carries sperm from the testicles, combines fluids from other glands and propels sperm

Answer 19

vas deferens

Question 20

physiological process where seminal fluid is powerfully expelled from the penis

Answer 20

ejaculation

Question 21

__________decrease about 1% per year after 40 years of age

Answer 21

testosterone levels

Question 22

in the 70s and 80s ______occurs

decreased spermatogenesis, thinner ejaculate, less ejaculatory force, libido decreases, fatigue , mood disturbances, decreased strength

Answer 22

andropause

Question 23

abnormally prolonged and painful erection that is not associated with sexual desire or excitement

blood is trapped in erectile tissue

Answer 23

priapism

Question 24

testis is twisted on its spermatic cord; many causes

symptoms are pain and swelling

spermatic cord manipulation or surgery required within 6 hours

Answer 24

testicular torsion

Question 25

two egg shaped glands in the scrotum
2 inches long 1 inch diameter

one hangs a bit lower to allow sliding past rather than compression

Answer 25

testicles

Question 26

2 primary functions of testicles

Answer 26

testosterone production

production of sperm

Question 27

interstitial or leydig cells in the testicles produce testosterone out of

Answer 27

cholesterol

Question 28

testes do not descend into the scrotum

surgery often required if not descended by 6 mo of age

high risk of infertility of not treated

increased risk of testicular cancer

Answer 28

cyptorchidism

Question 29

painful curvature of the penis making penetration impossible

cause is unknown

may disappear within 2 years or required drugs or surgery

Answer 29

peyronie’s disease