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Embryo - Wikipedia A newly developing human is typically referred to as an embryo until the ninth week after conception, when it is then referred to as a fetus In other multicellular organisms, the word "embryo" can be used more broadly to any early developmental or life cycle stage prior to birth or hatching
Embryo | Description, Characteristics, Development | Britannica An embryo is the early developmental stage of an animal while it is in the egg or within the uterus of the mother In humans the term is applied to the unborn child until the end of the seventh week following conception
EMBRYO Definition Meaning - Merriam-Webster : an animal in the early stages of development that are marked by cleavage, the laying down of the basic tissues, and the formation of primitive organs and organ systems compare fetus : a tiny young plant within a seed : a beginning or undeveloped stageused especially in the phrase in embryo
What is the difference between an embryo, a fetus, and a baby? When egg and sperm meet, a zygote is formed and quickly begins dividing to become an embryo As pregnancy progresses, the embryo becomes a fetus The fetus becomes a neonate or newborn at birth
Embryo | definition of Embryo by Medical dictionary embryo An organism in its earliest stages of development, especially before it has reached a stage at which it can be distinguished from other species The human embryo is so called up to the eighth week after fertilization After that it is called a fetus
What Is an Embryo? A Look at Early Biological Development An embryo represents the initial stage of development in a multicellular organism This period is characterized by rapid cell division and the establishment of the basic body plan In organisms that reproduce sexually, this phase begins after fertilization, transforming a single cell into a complex structure with the potential to form specialized tissues and organs In humans, the developing
Embryo - Embryology Wiki The embryonic period is characterized by rapid growth, high developmental sensitivity, and the emergence of all major organ systems An embryo becomes a fetus about eight weeks after conception
The differences between zygote, embryo and foetus during . . . An embryo is considered to be an embryo when the gestational age is less than 8 weeks, taking into account from the last missed menstrual period Once beyond 8 weeks and until birth, it is called a foetus