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11 Cards in this Set
- Front
- Back
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Female sex cell |
Egg |
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Male sex cell |
Sperm |
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What happens at fertilisation? |
The two nuclei fuse to form a zygote. |
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What is a gamete? |
A sex cell. |
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After fertilisation what does the cell do? |
Start to divide. |
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What's the difference between external and internal fertilisation? |
External happen outside the body, internal happens inside the female. |
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Why are substances able to pass between the mother and baby's blood? |
At the placenta the blood streams come very close so the substances can pass from one to the other. |
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Name two foods which pass from mother to baby. |
Oxygen and glucose |
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Name two substances that pass from baby to mother. |
Carbon dioxide and urea |
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What should mother not take/do when they are pregnant. |
Alcohol, drugs and smoke. |
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Which way does the baby have to be born. |
Head first. |
