The human reproductive system
Chapter 1
The cellular blueprints of life
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Chapter 2
The hormonal orchestra and anatomy
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Chapter 3
The spectacular moment of conception
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Chapter 4
The journey from cell to baby
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YOUR GOAL
Master of The human reproductive system
Ch 3 · The spectacular moment of conception
Fun Fact
The zinc spark: At the exact moment of fertilization, the human egg releases a tiny flash of light made of zinc.
Glossary
fertilization (noun)
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.
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.
Quiz
What is the protective, jelly-like outer membrane surrounding a human egg cell called?
Quiz
What structures in the fallopian tube help sweep the fertilized egg toward the uterus?
Quiz
Around which day after fertilization does the blastocyst typically implant into the uterine wall?
Quiz
What is a fertilized human egg called immediately after the sperm and egg DNA fuse?
Quiz
What is the name of the enzyme-filled cap on a sperm's head that helps it penetrate the egg?