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chorioallantoisenUK
cho·ri·o·al·lan·to·is C0327200 (kôr′ē-ō′ə-lăn′tō-ĭs)n. The highly vascular fetal membrane that consists of the fused chorion and allantois, found adjacent to the eggshell in reptiles and birds and constituting the placenta in most mammals.
cho′ri·o·al′lan·to′ic (-ō-ăl′ən-tō′ĭk) adj.chorioallantois (ˌkɒrɪəʊˌælənˈtəʊɪs) n (Anatomy) the membrane of a fetus that is formed by the merging of the allantois and the chorioncho•ri•o•al•lan•to•is (ˌkɔr i oʊ əˈlæn toʊ ɪs, -tɔɪs, ˌkoʊr-)
n. a vascular membrane surrounding the embryo in birds, reptiles, and certain mammals, formed by the fusion of the walls of the chorion and allantois. [1930–35] cho`ri•o•al`lan•to′ic (-ˌæl ənˈtoʊ ɪk) adj. Thesaurus| Noun | 1. | chorioallantois - the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantoischorioallantoic membranetissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants |
chorioallantoisenUK
chorioallantois[¦kȯr·ē·ō·ə′lant·ə·wəs] (embryology) A vascular fetal membrane that is formed by the close association or fusion of the chorion and allantois. chorioallantoisenUK
chorioallantois [kor″e-o-ah-lan´to-is] an extraembryonic structure formed by union of the chorion and allantois, which by means of vessels in the associated mesoderm serves in gas exchange; in many mammals, it forms the placenta. adj., adj chorioallanto´ic.cho·ri·o·al·lan·to·is (kō'rē-ō-ă-lan'tō-is), Extraembryonic membrane formed by the fusion of the allantois with the serosa or false chorion. In mammalian embryos, it forms the fetal portion of the placenta; in avian embryos, it is fused with the shell.chorioallantois (kôr′ē-ō′ə-lăn′tō-ĭs)n. The highly vascular fetal membrane that consists of the fused chorion and allantois, found adjacent to the eggshell in reptiles and birds and constituting the placenta in most mammals.
cho′ri·o·al′lan·to′ic (-ō-ăl′ən-tō′ĭk) adj.cho·ri·o·al·lan·to·is (kōr'ē-ō-ă-lan'tō-is) Extraembryonic membrane formed by the fusion of the allantois with the serosa or false chorion. In mammals it forms the fetal portion of the placenta; in avian embryos it is fused with the shell. chorioallantoisenUK
Related to chorioallantois: chorioallantoicSynonyms for chorioallantoisnoun the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantoisSynonymsRelated Words |