Science Notebook - Student Edition

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Section 36.2 Human Development Before Birth (continued)

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on page.

Three Trimesters

of Development

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on page.

Diagnosis in the

Fetus

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on page.

Model a placenta and umbilical cord attached to an embr yo. Draw

arrows to show the route oxygen and nutrients take from the mother’s

blood to the embr yo and how wastes are removed.

Compare development of an embr yo into a fetus during each

trimester. Describe the changes that occur.

First Trimester Second Trimester Third Trimester

Analyze one of the methods of diagnosis in the fetus and describe

its benefits and risks.

Use the analogy of plant growth to compare to the growth and

development of a fetus over nine months.

(^) SUMMARIZE
Human Reproduction and Development 371