Prenatal development | Description, Stages, & Timeline
网页Prenatal development, the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. This process can be divided into three distinct stages: the pre-embryonic stage, the embryonic period, and the fetal period.
3 Prenatal Development Stages - Verywell Mind
网页2024年5月20日 · There are three stages of prenatal development: the germinal, embryonic, and fetal stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week is known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.
Fetal development by week: Your baby in the womb - BabyCenter
网页2023年2月21日 · Use this timeline to learn what your baby's up to and how they're developing throughout pregnancy. Follow your baby's development week by week, from conception to labor, in these amazingly detailed, doctor-reviewed images. Your egg is fertilized 12 to 24 hours later if a sperm penetrates it.
Stages of Fetal Development - Stages of Fetal Development
网页Development of the Fetus. At the end of the tenth week of pregnancy (8 weeks after fertilization), the fetal stage begins. During this stage, the organs and systems that have already formed grow and develop as follows: By 12 weeks of pregnancy: The fetus fills the entire uterine cavity.
Fetal Development: Week-by-Week Stages of Pregnancy - Cleveland Clinic
网页There are three stages of fetal development: germinal, embryonic and fetal. Most people don’t talk about their pregnancy in these terms, but it can be helpful to know. Germinal stage. The germinal stage is the shortest stage of fetal development. It begins at conception when a sperm and egg join in your fallopian tube. The sperm fertilizes ...
Pregnancy Timeline: Fetal Development Week-by-Week with Pictures - WebMD
网页Track your baby’s growth using this simple visual timeline. Trimester 1. weeks 1 - 13. Trimester 2. weeks 14 - 26. Trimester 3. weeks 27 - 40. Use our Pregnancy Calendar for daily pregnancy tips ...
Fetal development: The 1st trimester - Mayo Clinic
网页2022年6月3日 · Fetal development typically follows a predictable course. Find out what happens during the first trimester by checking out this weekly calendar of events. Keep in mind that measurements are approximate.
Interactive Prenatal Timeline | Embryonic & Fetal Development …
网页This vertical timeline, featuring movies, images, facts, and even quiz questions, is an extremely versatile tool for learning about prenatal development from fertilization to birth. Study development chronologically, as a whole or by body system.
Prenatal Development: A Look Across Three Trimesters - Healthline
网页2016年6月28日 · Prenatal development starts at conception and ends with the birth of your baby. It takes about 40 weeks or nine months to create a new life, and your pregnancy is broken into three, 12-week...
Prenatal development - Fetal Growth, Nutrition, Environment
网页The average size and weight of the baby from two to nine months during prenatal development are shown in the table. Fetal age, size, and weight months after conception
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