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The Terminologia Embryologica (TE) is a standardized list of words used in the description of human embryologic and fetal structures.It was produced by the Federative International Committee on Anatomical Terminology on behalf of the International Federation of Associations of Anatomists and posted on the Internet since 2010. [1]
of or pertaining to the mind Greek ψυχή (psukhḗ), breath, life, soul psychology, psychiatry: ptero-, ptery-Pertaining to a wing; 'pterygo-', wing-shaped Greek πτερόν (pterón), wing, feather lateral pterygoid plate-ptosis: falling, drooping, downward placement, prolapse Greek πτῶσῐς (ptôsis), falling apoptosis, nephroptosis
1 - morula, 2 - blastula 1 - blastula, 2 - gastrula with blastopore; orange - ectoderm, red - endoderm. Embryology (from Greek ἔμβρυον, embryon, "the unborn, embryo"; and -λογία, -logia) is the branch of animal biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos and fetuses.
In humans, the embryonic period ends nine weeks after conception, after which time the term fetus is used instead of embryo. In many other animals, embryogenesis is considered complete only after hatching or birth. embryology embryonate Containing a developing embryo; e.g. an embryonated hen's egg, as opposed to an unfertilized egg. [2] endoderm
In biological terms, the development of the human body entails growth from a one-celled zygote to an adult human being. Fertilization occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form the single cell zygote and the germinal stage of development commences.
Sometimes this is called the pre-embryo a term employed to differentiate from an embryo proper in relation to embryonic stem cell discourses. [ 11 ] Gastrulation is the next phase of embryonic development, and involves the development of two or more layers of cells (germinal layers).
Shell-less chick embryo culture; Sinus tubercle; Somatic embryogenesis; Somatopleuric mesenchyme; Somite; Somitogenesis; Somitomere; Spemann-Mangold organizer; Splanchnopleuric mesenchyme; Standard Event System; Stigma (anatomy) Studies of the Fetus in the Womb; Surface ectoderm; Surfactant–albumin ratio; Syncytiotrophoblast
Different terms are used to describe prenatal development, meaning development before birth. A term with the same meaning is the "antepartum" (from Latin ante "before" and parere "to give birth") Sometimes "antepartum" is however used to denote the period between the 24th/26th week of gestational age until birth, for example in antepartum ...