THE REPRODUCTIVE SYSTEM: MALE & FEMALE

ANATOMY

REPRODUCTIVE SYSTEM: A system that produces haploid sex cells called gametes ( egg & sperm)

The male:

Male reproductive systemUreter

bladder

Seminal Vesicle

Rectum

Prostate Gland

Penis

Vas Deferens

Epididymis

TestesUrethra

Scrotum

TESTES: the male organs that produce sperm cells and the hormone Testosterone

Located inside a sac called the scrotum

EPIDIDYMIS

TESTIS

SCROTUM

SCROTUM: located outside the body

-protects the testes

- keeps them slightly cooler than body temperature

- important for sperm

cell development & survival.

SEMINIFEROUS TUBULES:Tightly coiled tubules that give

the testes their shape.

Seminiferous tubules

It is also where sperm is produced.

SPERM:

Small, motile gametes produced in the testes and used for reproduction - ~ 700 million produced each day

head

Middle section

Tail (flagellum)

EPIDIDYMIS:

A coiled tube that lies alongside each testis inside the scrotum . It is where sperm is stored until it is matured.

VAS DEFERENS:A duct that transports sperm from the epididymis to the ejaculatory duct & urethra. It is the structure that is cut during a vasectomy.

EJACULATORY DUCT & URETHRAEmpties into the urethra. Passes

through the penis and carries semen and urine but at different times

PENIS: (surrounds the urethra)Made of spongy erectile tissue that expands when filled with blood.

Propels semen (containing sperm, fructose & other fluids made by the prostate gland) during ejaculation. Semen also cleanses the urethra

PATHWAY OF SPERM OUT OF BODY

testis

epididymis

Vas deferens

Ejaculatory duct

penis

urethra

BLADDER

Reproductive system - female

The female reproductive system:

Ovary Uterus

Cervix

Vagina

Labia

Fallopian Tubes

The ovary:The female organ that usually releases one ovum (egg) a month

Produces the hormones estrogen and progesterone.

Contains about 400,000 follicles which is where the egg develops and matures.

Fallopian tubes:Pathway through which an egg travels to the uterus.

Fertilization occurs here.

Structure that is cut/tied during a tubal ligation.

Uterus:

Muscular, pear-shaped organ where the fetus develops.

Inner layer called the endometrium where fertilized egg plants itself.

Cervix connectsthe uterus tothe vagina

Vagina:* Tube shaped organ that opens to the outside of the body

* Serves as the birth canal where the baby exits the body.

* Receives the penis during intercourse - it is also where sperm enters.

Pathway of sperm during intercourse: Fallopian

tubes

uterus

cervix

vagina

Pathway of egg :Fallopian tubes

Uterus

If fertilized, implants in uterine wall.

If not, discharged with uterine wall during menstruation.