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 1 · The cellular blueprints of life
teacher When we light up the dark— (yeah, we're lighting it up!) / We make a golden spark! (oh, a beautiful spark!)
Fun Fact
Egg cell size: The human egg cell is the only cell in the human body large enough to be seen with the naked eye.
Glossary
chromosome (noun)
A threadlike structure of nucleic acids and protein carrying genetic information in the cell nucleus. During fertilization, human sperm and egg cells each contribute twenty-three chromosomes to form a new zygote.
A threadlike structure of nucleic acids and protein carrying genetic information in the cell nucleus. During fertilization, human sperm and egg cells each contribute twenty-three chromosomes to form a new zygote.
Quiz
What is the name of the special cell division process that creates human gametes (sperm and egg)?
Quiz
What evolutionary advantage is primarily gained through the process of sexual reproduction?
Quiz
Out of hundreds of millions of sperm released, roughly how many actually reach the egg's location?
Quiz
Which of these cells is the only human cell visible to the naked eye without a microscope?
Quiz
Which ancient organism is currently known as the earliest fossil evidence of sexual reproduction?