First+Trimester

toc = Definition: = The First Trimester begins from the first day of a women's last menstrual period and continues for twelve weeks. Page 58. HGD textbook, Chapter 3, page 58.

Related Terms: Fetal Stage| Prenatal Development|



= Examples: = Facts about the First Trimester:


 * The first trimester begins when the zygote implants itself in the lining of the woman's uterus.
 * Missed period, breast enlargement, and abdominal thickening are events that can happen during the first trimester.
 * Prenatal care is essential because all of the baby's organs are formed during the first 8 weeks.
 * Additionally, early prenatal care can identify maternal conditions, such as sexually transmitted diseases, that may threaten prenatal development.

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=In the News:= Click the links for information:
 * ====**[|Nearly 18 percent of pregnant women drink alcohol during first trimester]**====
 * ====**Week by Week Development**====
 * ====**Month by Month Development **====

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