The cellular blueprints of life
The hormonal orchestra and anatomy
The spectacular moment of conception
The journey from cell to baby
YOUR GOAL
Master of The human reproductive system
artiteacher The spectacular moment of conception
Zinc spark, zinc spark! We are glowing in the dark!

artiteacher The exact moment of fertilization triggers a literal flash of light from the egg.

artiteacher A sperm must release special enzymes to dissolve the protective layers surrounding the egg.

artiteacher Drag the friendly spark to the egg to discover how human life begins.
The zinc spark: At the exact moment of fertilization, the human egg releases a tiny flash of light made of zinc.
The fusion of male and female gametes to form a zygote. This biological event occurs in the fallopian tube when a sperm penetrates a mature egg.
What is the protective, jelly-like outer membrane surrounding a human egg cell called?
What structures in the fallopian tube help sweep the fertilized egg toward the uterus?
Around which day after fertilization does the blastocyst typically implant into the uterine wall?
What is a fertilized human egg called immediately after the sperm and egg DNA fuse?
What is the name of the enzyme-filled cap on a sperm's head that helps it penetrate the egg?
What chemical signal does a human egg release to attract sperm toward its location?
