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The Human Reproductive System

Across
When a sperm and an egg combine, this is called fertilization. What is a fertilized egg called? It starts with Z.
This is a female sex organ that becomes firmer. This occurs when a female is sexually aroused.
This is a white fluid that carries the sperm.
These are chemicals that run through the body, especially during puberty.
This is when the penis enters inside the vagina. It starts with an I.
This is a protective piece of tissue inside the vagina that breaks when a woman has sexual intercourse for the first time.
This is a time when kids go through changes.
This is the sack of skin which holds the testes.
This is the name for the female sex organ.
This is the name for the male sex cell.
Down
This is the name for the female sex cell.
This is the name for the male sex organ.
This is the name for the tubes that the eggs travel down when they leave the ovaries.
This is where urine comes out. Boys and girls both have one. It starts with U.
This is the name for the male gonads. It starts with T.
This happens when blood flows to the penis, making it firm. This occurs when a male is sexually aroused.
This is the name for the female gonads. It starts with O.
This is a name for when females release an egg. It happens once a month, starting at puberty.
This is the place where a baby grows. It starts with U.
This is the name for the protective, folded skin which surrounds both the urethra and the vagina in females.
This is a sensitive part of the penis that is a different colour from the rest.