Ch. 4 Male Anatomy and Sexual Response

Question 1

External Parts of Penis: Glans

Answer 1

end or tip of penis

Question 2

External Parts of Penis: Meatus or urethral opening

Answer 2

opening at the end of the glans; urine and semen pass through

Question 3

External Parts of Penis: Body or shaft

Answer 3

main part of the penis

Question 4

External Parts of Penis: Corona

Answer 4

raised ridge separating glans from the body of the penis.

Question 5

External Parts of Penis: Foreskin or prepuce

Answer 5

additional layer of skin that forms a sheath-like covering over the glans. Absent in circumcised penises

Question 6

Internal Parts of Penis: Corpora cavernosa

Answer 6

the two bodies lying on top

Question 7

Internal Parts of Penis: Corpus spongiosum

Answer 7

single body lying on the bottom of the penis; urethra runs through the middle

Question 8

Male Genital Cutting: Circumcision

Answer 8

surgical cutting away or removal of foreskin

Question 9

Male Genital Cutting: Supercision

Answer 9

making a slit in the length of the foreskin on the top

Question 10

Male Genital cutting: Subincision

Answer 10

making a slit on the lower side of the penis along its entire length

Question 11

Scrotum (scrotal sac)

Answer 11

• Loose pouch of skin, lightly covered with hair
• Contains the testes

Question 12

Scrotum is controlled by 2 muscles…

Answer 12

○ Dartos muscle – causes skin surface to wrinkle
○ Cremaster muscle – elevates scrotal sac closer to body

Question 13

Testes (gonads or reproductive glands)

Answer 13

• Manufactures reproductive cells, sperm
• Manufacture sex hormones, testosterone

Question 14

Inside the Testes: Seminiferous tubules

Answer 14

○ long series of threadlike tubes in testes
○ manufactures & stores sperm

Question 15

Inside the Testes: Interstitial cells

Answer 15

○ produce testosterone
○ found in connective tissue between seminiferous tubules

Question 16

Epididymis

Answer 16

○ long tube coiled into a small crescent-shaped region on the top and side of the testis
○ stores & matures sperm

Question 17

Vas Deferens

Answer 17

tube that goes up and out of scrotum and passes through the prostate, where it is called the ejaculatory duct

Question 18

Sperm

Answer 18

• Several hundred million produced a day
• Take 64-72 days to form in the seminiferous tubules
• Stored in Epididymis for 20 days
• Upon ejaculation, travels the length of the vas deferens and out the urethra
• Carries XY genetic information

Question 19

Seminal Vesicles

Answer 19

• Two sac-like structures that lie above the prostate, behind the bladder, and in front of the rectum
• Produces 70% of the seminal fluid of the ejaculate

Question 20

Prostate

Answer 20

○ lies below the bladder
○ size and shape of a chestnut
○ secretes a milky alkaline fluid that is part of the ejaculate

Question 21

Cowper’s Glands or bulbourethral glands

Answer 21

○ located below prostate
○ empty into urethra
○ produces a secretion before ejaculation

Question 22

Tanner Stages

Answer 22

Stage 1: ~ 9 years old
Stage 2: ~11 years old
○ pubic hair development
Stage 3: ~13 years old
○ Voice changes
Stage 4: ~14 years old
○ Acne
○ Arm pit hair

Question 23

Theories of Sexual Response: Masters and Johnsons

Answer 23

1. Excitation
2. Plateau
3. Orgasm
4. Resolution

Question 24

Sexual Inhibition

Answer 24

• Concerns for adverse event (pregnancy, STD, etc)
• Nonsexual challenge
• When sexual pursuits impact daily functioning
• Social or environmental pressures
• Decreased reproductive benefit

Question 25

Myths about Male Orgasm

Answer 25

• Size Matters
• Supplements can lower refractory period
• “Blue balls” are deadly
• Premature ejaculation is incurable
• Men don’t fake orgasm
• Men must ejaculate to be satisfied or experience sexual pleasure