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  1. Fetal development by week: Your baby in the womb | BabyCenter

    Apr 10, 2025 · Follow your baby's development week by week, from conception to labor, in these amazingly detailed, doctor-reviewed images. At the start of this week, you ovulate. Your egg is …

  2. Fetus - Wikipedia

    In human prenatal development, fetal development begins from the ninth week after fertilization (which is the eleventh week of gestational age) and continues until the birth of a newborn.

  3. Fetal Development: Week-by-Week Stages of Pregnancy

    Fetal development is how a fetus grows during pregnancy. It begins at conception and ends at birth. Many changes occur to the fetus and the pregnant person in this time.

  4. Fetal development: The first trimester - Mayo Clinic

    Mar 18, 2025 · At the 11th week of pregnancy, or the ninth week after conception, your baby now is called a fetus. At this point in pregnancy, the face is broad, the eyes widely separated, the eyelids …

  5. Prenatal development | Description, Stages, & Timeline | Britannica

    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 …

  6. Stages of Fetal Development - The Merck Manuals

    By 12 weeks of pregnancy: The fetus fills the entire uterine cavity. As the pregnancy continues, the uterus enlarges as the fetus grows. By about 14 weeks: The sex can be identified on ultrasound. By …

  7. The Stages of Fetal Development - Human Life International

    Sep 10, 2024 · There are two ways to measure what stage of development a baby is in: fertilization age and gestational age. These terms can be somewhat confusing since they are based upon different …

  8. FETUS Definition & Meaning - Merriam-Webster

    The meaning of FETUS is an unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind; specifically : a developing human from usually two months after conception …

  9. Fetus Definition and Examples - Biology Online Dictionary

    Oct 3, 2023 · A fetus is a developing human organism in the womb from the 9th week of gestation until birth.

  10. Ascension Medical Group St. Vincent - Evansville Maternal Fetal Care

    Our care team of MFM specialists, OB GYN doctors, and specially trained nurses help expectant mothers who have an existing condition like high blood pressure, gestational diabetes, or heart …