Chapter 9: Male Reproductive system

bulbourethral glands

Pair of exocrine glands near male urethra; Cowper glands

ejaculation

Ejection of sperm and fluid from male urethra

ejaculatory duct

Tube through which semen enters the male urethra

epididymis (pl.: epididymides)

One of a pair of long, tightly coiled tubes above each testis that stores and carries sperm to the vas deferens

erectile dysfunction

Inability of an adult male to achieve an erection; impotence

flagellum

Hair-like projection on a sperm cell that makes it motile

fraternal twins

Two infants resulting from fertilization of two separate ova by two separate sperm cells

glans penis

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

identical twins

Two infants resulting from division of one fertilized egg into two distinct embryos; conjoined (“Siamese”) twins are incompletely separated identical twins

interstitial cells of the testes

Specialized cells adjacent to the seminiferous tubules in the testes; produce testosterone; also called Leydig cells

parenchymal tissue

Essential distinctive cells of an organ

penis

Male external organ of reproduction

perineum

External region between the anus and scrotum in the male

prepuce

Foreskin; fold of skin covering tip of penis

prostate gland

Exocrine gland at base of male urinary bladder; secretes fluid part of semen into urethra during ejaculation

scrotum

External sac that contains the testes

semen

Spermatozoa and seminal fluid discharged from the urethra during ejaculation

seminal vesicles

Paired sac-like exocrine glands that secrete fluid into the vas deferens

seminiferous tubules

Narrow, coiled tubules that produce sperm in the testes

spermatozoon (pl.: permatozoa)

Sperm cell

sterilization

Procedure that removes a person’s ability to produce or release reproductive cells through removal of testicles, vasectomy, or oophorectomy

stromal tissue

Supportive, connective tissue or an organ; stroma

testis (plural: testes)

Male gonad (testicle) that produces spermatozoa and testosterone

testosterone

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

vas deferens

Narrow tube carrying sperm from the epididymis toward the urethra; ductus deferens

hypospadias

a common congenital condition in male infants where the opening of the urethra (the tube that carries urine from the bladder) is located on the underside of the penis rather than at the tip

orchiopexy

a surgical procedure to move an undescended testicle into the scrotum or to untwist and secure a testicle affected by testicular torsion

-genesis

formation

-one

hormone

-pexy

fixation, put in place

-stomy

new opening

andr/o

male

balan/o

glans penis

cry/o

cold

crypt/o

hidden

epididym/o

epididymis

gon/o

seed

hydr/o

water, fluid

orch/o, orchi/o, orchid/o

testis, testicle

pen/o

penis

prostat/o

prostate gland

semin/i

semen, seed

sperm/o

spermatozoa, semen

terat/o

monster

test/o

testis, testicle

varic/o

varicose veins

vas/o

vessel duct

zo/o

animal life