Fetus - Wikipedia
A fetus or foetus (/ ˈ f iː t ə s /; pl.: fetuses, foetuses, rarely feti or foeti) is the unborn mammalian offspring that develops from an embryo. [1] Following the embryonic stage , the fetal stage of development takes place.
FOETUS | English meaning - Cambridge Dictionary
FOETUS definition: 1. a young human being or animal before birth, after the organs have started to develop: 2. a UK…. Learn more.
Fetus - Definition, Stages and Development | Biology Dictionary
2017年7月6日 · Fetus Definition. Fetal development occurs between the embryonic stage of development and birth in humans. This stage begins after 11 weeks of gestation, when the embryo begins to exhibit human characteristics, and lasts until birth.
Fetal development: The 1st trimester - Mayo Clinic
2022年6月3日 · What does your baby look like? How big is he or she? When will you feel the first kick? 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. Weeks 1 and 2: Getting ready.
Fetal development by week: Your baby in the womb - BabyCenter
2023年2月21日 · 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 fertilized 12 to 24 hours later if a sperm penetrates it.
Fetal Development: Week-by-Week Stages of Pregnancy - Cleveland Clinic
2024年3月19日 · Fetal stage. The fetal stage of development begins around the ninth week and lasts until birth. This is when the embryo officially turns into a fetus. The fetus gets its assigned sex around nine weeks of pregnancy, although your healthcare provider can’t detect it …
Embryo vs. Fetus: What’s the Difference? - Healthline
2023年4月12日 · In human pregnancies, a baby-to-be isn’t considered a fetus until the 9th week after conception, or week 11 after your last menstrual period (LMP). The embryonic period is all about the ...
Foetus Definition & Meaning - Merriam-Webster
2 天之前 · The meaning of FOETAL is chiefly British spellings of fetal.
Fetus Definition & Meaning - Merriam-Webster
fetus. noun. fe· tus ˈfēt-əs. plural fetuses. : a young animal while in the body of its mother or in the egg especially in the later stages of development. especially : a developing human being in the uterus from usually two months after pregnancy occurs to birth compare embryo sense 1.
What is the difference between an embryo, a fetus, and a baby?
2021年8月25日 · Top things to know. The embryonic stage begins with fertilization and lasts for eight weeks. From the 10th week of pregnancy (if you’re counting from the start of the last period) until birth is the fetal stage. A rapid and complex transition happens at birth, from dependent fetus to independent newborn.