CH 9 Definitions

Question 1

glans penis

Answer 1

sensitive tip of the penis; comparable to the clitoris in the female

Question 2

identical twins

Answer 2

two infants resulting from division of one fertilized egg. conjoined or siamese twins are incompletely separated identical twins.

Question 3

infertility

Answer 3

in a man, any problem that lowers the chances of his female partner getting pregnant

Question 4

interstitial cells of the testes

Answer 4

specialized cells that lie adjacent to the seminiferous tubules in the testes. these cells produce testosterone and are also called leydig cells.

Question 5

parenchymal tissue

Answer 5

essential distinctive cells of an organ. in the testis, the seminiferous tubules that produce sperm are parenchymal.

Question 6

penis

Answer 6

male external organ of reproduction

Question 7

perineum

Answer 7

external region between the anus and the scrotum in the male.

Question 8

prepuce

Answer 8

foreskin; fold of skin covering the tip of the penis

Question 9

prostate gland

Answer 9

exocrine gland at the base of the male urinary bladder. the prostate secretes fluid that contributes to semen during ejaculation. *don’t confuse prostate, the male gland, with prostrate, which means lying down

Question 10

scrotum

Answer 10

external sac that contains the testes

Question 11

semen

Answer 11

spermatozoa (sperm cells) and seminal fluid

(prostatic and seminal vesicle secretions), discharged from the urethra during ejaculation

Question 12

seminal vesicles

Answer 12

paired sac-like exocrine glands that secrete fluid (a major component of semen) into the vas deferens

Question 13

seminiferous tubules

Answer 13

narrow, coiled tubules that produce sperm in the testes

Question 14

spermatozoon

Answer 14

sperm cell

Question 15

spermatozoa

Answer 15

sperm cell, plural

Question 16

sterilization

Answer 16

procedure that removes a person’s ability to produce or release reproductive cells; removal of testicles, vasectomy, and oophorectomy are sterilization procedures

Question 17

stromal tissue

Answer 17

supportive, connective tissue of an organ, as distinguished from its parenchyma. also called stroma.

Question 18

testis

Answer 18

male gonad (testicle) that produces spermatozoa and testosterone remember: testis means one testicle, and testes is two testicles

Question 19

testes

Answer 19

plural for testicle, meaning two

Question 20

testosterone

Answer 20

hormone secreted by the interstitial tissue of the testes; responsible for male sex characteristics

Question 21

vas deferens

Answer 21

narrow tube (one on each side) carrying sperm from the epididymis toward the urethra. also called ductal deferens.

Question 22

perineum (area between anus and scrotum) is not the same as peritoneum, which is:

Answer 22

the membrane surrounding the abdominal cavity

Question 23

semen is the thick, whitish secretion discharged from the urethra during ejaculation while sperm:

Answer 23

sperm/ spermatazoa are cells that develop in the testes- semen contains sperm.

Question 24

sterilization can be performed in men and women, while impotence:

Answer 24

only happens in men, as it is the inability of a male to sustain an erection or achieve ejaculation

Question 25

bulborethral glands

Answer 25

pair of exocrine glands near the male urethra, they secrete fluid into the urethra. also called cowper glands.

Question 26

circumcision

Answer 26

removal of the prepuce (foreskin). it is a common elective procedure performed shortly after birth.

Question 27

ejaculation

Answer 27

ejection of sperm and fluid from the male urethra.

Question 28

ejaculatory duct

Answer 28

tube through which semen enters the male urethra

Question 29

epididymis

Answer 29

one of a pair of long tightly coiled tubes above each testis that stores and carries sperm from seminiferous tubules to the vas deferens.

Question 30

epididymides

Answer 30

referring to both epididymus on each side

Question 31

erectile dysfunction

Answer 31

inability of an adult male to achieve an erection; impotence

Question 32

flagellum

Answer 32

hair-like projection on a sperm cell that makes it motile (able to move).

Question 33

foreskin

Answer 33

fold of skin covering the head of the penis; prepuce

Question 34

fraternal twins

Answer 34

two infants resulting from fertilization of two separate ova by two separate sperm cells (two amniotic sacs)