Human Reproduction

pubic bone urinary bladderureter

rectum

seminal vesicle

prostate gland

bulbourethral glandvas deferensepididymistestis

scrotum

urethralopening

penis

urethra

vas deferensepididymis

uncoiledseminiferoustubule

testis

spermatogonia

A section through the testis

daughter cells

sperm

Sertolicells

interstitialcell

Cross-section of a seminiferous tubule

occurs continuously startingat puberty

spermatogoniumprimaryspermatocyte

secondaryspermatocytes

spermatids sperm

Mitosis Meiosis I Meiosis II Differentiation

fimbria

ovary

uterine tube

urinary bladderpubic bone

urethra

clitoris

labiaanus

rectum

vagina

cervix

uterusmyometriumendometrium

uterine tube

ovulating egg

ovary

ovary

Ovulatedsecondaryoocyte (egg)

Rupturedfollicle

Corpus luteum

Degeneratingcorpus luteum

Undevelopedfollicles, each containinga primary oocyte

Developingfollicles

Maturefollicle witha secondary oocyte

develops in the fetus producedmonthlybeginning atpuberty

egg

polar body

polar body

polar body

polar body

oogoniumprimaryoocyte

secondaryoocyte (egg)

producedafterfertilization

Mitosis Meiosis I Meiosis II

secondary oocyte (egg)

corona radiata zona pellucida

An ovulated secondaryoocyte

Sperm surrounding an oocyte

The vasdeferens issevered andits ends aresealed

The uterinetube is severedand its ends are sealed

ovary

uterus

testis

scrotum

Vasectomy Tubal ligation