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embryo    音标拼音: ['ɛmbri,o]
n. 胎儿,胚胎,胚芽

胎儿,胚胎,胚芽

embryo
n 1: (botany) a minute rudimentary plant contained within a seed
or an archegonium
2: an animal organism in the early stages of growth and
differentiation that in higher forms merge into fetal stages
but in lower forms terminate in commencement of larval life
[synonym: {embryo}, {conceptus}, {fertilized egg}]


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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
  • What Is a Human Embryo and When Does It Become a Fetus?
    A human embryo is the earliest stage of human development after fertilization, spanning the first eight weeks During this brief window, a single fertilized cell transforms into a recognizable human form with a beating heart, a developing brain, and the beginnings of every major organ
  • 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
  • Fetal development by week: Your baby in the womb | BabyCenter
    Curious about how your baby is developing in the womb? Here's a breakdown of fetal development week by week
  • What Is an Embryo? A Look at Early Biological Development
    In humans, the developing organism is referred to as an embryo from the first cell division until about the eighth week after fertilization The journey of an embryo starts with fertilization, the fusion of two specialized sex cells, known as gametes—a sperm from the male and an egg from the female
  • Embryo - Definition and Examples - Biology Online Dictionary
    An embryo is a newly fertilized egg (zygote) up till the eighth week of development as it transforms through the morula, blastula, gastrula, and organogenesis stages
  • Human Embryonic and Fetal Development: Stages and Milestones Explained . . .
    Human embryonic and fetal development is a fascinating journey that transforms a single cell into a fully formed fetus This diagram illustrates the key stages from fertilization to 20 weeks of fetal development, providing a clear visual guide for understanding this process
  • 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
  • Embryo | Anatomy and Physiology | Research Starters - EBSCO
    An embryo is the early developmental stage of a multicellular organism, particularly in humans, where it develops from conception until the eighth week of pregnancy





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