First trimester
First trimester
The first trimester (/ˈtraɪˌmɛstər/; from Latin trimestris, "of three months") is the initial stage of pregnancy that starts from the first day of the last menstrual period (LMP) and continues until the end of the 13th week.
Etymology
The term trimester comes from the Latin tri (three) and mester (month), which means a period of three months. It is used in the context of pregnancy to divide the nine-month gestation period into three equal parts.
Definition
The first trimester is a period of rapid development for the fetus. It is during this time that the fetus transforms from a small cluster of cells into a recognizable human form with distinct organs and features. The first trimester is also a critical period for the mother as her body undergoes significant changes to support the growing fetus.
Related Terms
- Embryo: The term for the developing offspring during the first eight weeks following conception.
- Gestation: The period of time between conception and birth during which the fetus grows and develops inside the mother's uterus.
- Morning sickness: A common symptom of pregnancy that is often experienced during the first trimester. It is characterized by nausea and vomiting.
- Prenatal care: The health care a woman receives during her pregnancy. It often includes regular doctor visits, nutritional counseling, and various tests to monitor the health of the mother and fetus.
See Also
External links
- Medical encyclopedia article on First trimester
- Wikipedia's article - First trimester
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