The prenatal period, and identify the three shorter periods that occur during the prenatal period. Concept introduction: Gestation or pregnancy is the period during which offspring develops within a woman. This involves several developmental stages of the fetus. In humans, pregnancy is nearly nine months long, divided into three trimesters, involving several changes in the mother and the growing fetus.

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Chapter 29.1, Problem 1LO

Summary Introduction

To define: The prenatal period, and identify the three shorter periods that occur during the prenatal period.

Concept introduction: Gestation or pregnancy is the period during which offspring develops within a woman. This involves several developmental stages of the fetus. In humans, pregnancy is nearly nine months long, divided into three trimesters, involving several changes in the mother and the growing fetus.

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