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testes

The male gonads, which produce sperm and secrete male sex hormones.

sperm

the male reproductive cell

testosterone

hormone released to develop the male reproductive organs.

scrotum

the external pouch that contains the testes

epididymis

a convoluted tubule in each testis

vas deferens

a duct that carries spermatozoa from the epididymis to the ejaculatory duct

seminal vesicles

produces seminal fluid

prostate gland

a firm partly muscular chestnut sized gland in males at the neck of the urethra

semen

the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

urethra

duct through which urine is discharged in most mammals and which serves as the male genital duct

ejaculatory duct

Tube through which semen enters the male urethra

penis

the male organ that transfers sperm to a female and that carries urine out of the body.

foreskin

a fold of skin covering the tip of the penis

circumcision

the act of circumcising performed on males eight days after birth as a Jewish and Muslim religious rite

erection

When the penis becomes engorged with blood and hard

masturbation

stimulating one's own genitals, usually until orgasm occurs.

sexual response cycle

the four stages of sexual responding described by Matsters and Johnson-excitement, plateau, orgasm, and resolution.

sexual intercourse

the insertion of the penis into the vagina

orgasm

the moment of most intense pleasure in sexual intercourse

ejaculation

the discharge of semen by the male reproductive organs

ovaries

organs that produce eggs

egg

female reproductive unit created in the ovaries

estrogen

female sex hormone

uterus

organ of the female reproductive system in which a fertilized egg can develop

fallopian tubes

tubes which carry eggs from the ovaries to the uterus and which provides the place where fertilization occurs

cervix

the opening to the uterus

vagina

in the human female reproductive system, a canal that leads from the uterus to the outside of the body

menstruation

the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause

vulva

external parts of the female genitalia

mons pubis

a mound of fatty tissue covering the pubic area in women

labia minoria

two smaller hairless folds of tissue that are located within the labia majora.

labia majora

two large folds of fatty tissue that are covered with hair on their outer surfaces; they enclose and protect the vagina

ovulation

process in which an egg is released from the ovary

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