Structure/Function:M

Question 1

what is the scrotum and what does it do

(4 things)

Answer 1

• multilayer pouch
• contains, protects, and keeps the testes cool
• thin outermost layer
• has sweat glands

Question 2

second layer of the scrotum

(3)

Answer 2

• muscle and fibrous tissue
• contracts with cold and sexual arousal
• wrinkled when contracted

Question 3

cryptochidism

Answer 3

• failure to descend
• can correct itself
• reproductive problems and illness

Question 4

design features of the scrotum to keep them cool

(4)

Answer 4

1. lack of fat
2. small blood vessels near the surface
3. sweat glands
4. vascular heat exchange

Question 5

the scrotum is design to
1. cool the testies
2. warm the testies
3. keep it at a constant temp

Answer 5

3.keep it at a constant temp

Question 6

what is the tunica albuginea

Answer 6

tight, white, inelastic fibrous sheath that wraps around the testes

Question 7

mumps

Answer 7

expains the testes and crushes them from the inside out

Question 8

seminiferous tubules

Answer 8

subdivided lobes that store the sperm

Question 9

spermatogenesis

Answer 9

• mature sperm is 1/2 the genetic material

Question 10

male sex hormones

generically known

Answer 10

androgens

Question 11

Leydig’s cells

interstitial cells

Answer 11

• between seminiferous tubules
• testosterone and other hormones are created there

Question 12

epididymis

and the selection chamber

Answer 12

• acts as storage (for 6 weeks)
• selection chamber (where the sperm gets absorbed)

Question 13

vas deferens

Answer 13

• firm cord that connects to the 2 ejaculatory ducts

Question 14

urethra

Answer 14

• transports sperm
• transports urine

Question 15

prostate gland

Answer 15

• size/shape of a large chestnut
• pt. of seminal fluid

Question 16

seminal fluid

Answer 16

• neutralizes acidity of the vigina
• helps transports the sperm

Question 17

seminal vesicles

Answer 17

• substance initiates movement in sperm

Question 18

cowper’s gland

bulbourethral glands

Answer 18

• alkaline, clear, sticky substance
• neutralizes acidty of urethra
• normally produces no sperm, but sometomes gets “ninja sperm”

Question 19

The structure which connects the epidiymis and the ejaculatory duct is the
1. prostate
2. urethra
3. vas deferens
4. semi. tubules

Answer 19

3.vas def

Question 20

the penis has 3 parallel cylinders, what are they

Answer 20

2 cavernous bodies and 1 spongy body

Question 21

the penis’ irregular cavities

(3)

Answer 21

• engorged with blood when aroused
• the fibers will stiffen the penis
• it can break the fibers with sudden force

Question 22

glans

Answer 22

• smooth, round head
• lots of nerve endings

Question 23

coronal ridge

Answer 23

the risen pt of the penis between the glans and the shaft

Question 24

frenulum

Answer 24

the strip connecting the glans to the body of the penis

Question 25

foreskin | strech type, circumcision, smegma

Answer 25

- ordinarily retractable - too tight, then cut it (phimosis) - circumcision (ritual) - smegma (chessy desposit when foreskin not cleaned)

Question 26

penis shape and size can vary, what are the 3 main shapes?

Answer 26

1. blunt 2. bottle 3. prow

Question 27

erection | relflexes, turning off, arteries

Answer 27

- reflexe centres in spinal cord (input nerves in penis to sacral 2-4) (parasympathetic) - input from brain to thoracic/lumbar regions (T11-L2) (sympathetic) - can be turned off via psyo - dialation of the arteries (blood goes in)

Question 28

Ejaculation | impulses, contractions

Answer 28

- impulses go to ejaculation centres - expulsion of semen - rythmic contractions moves the semen - contraction of bulbocavernosus muscle at base of penis

Question 29

orgasm

Answer 29

- total body response with rapid release of sexual tension - ejaculation and orgasm sometimes happen at the same time