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allantois

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Allantois - Wikipedia
It is a hollow sac-like structure filled with clear fluid that forms part of the developing conceptus in an amniote that helps the embryo exchange gases and ... en.wikipedia.org
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Allantois - an overview | ScienceDirect Topics
The allantois is a principal component of the chorioallantoic placenta (Figure 3(b)). The allantoic vesicle connects to the urinary system. www.sciencedirect.com
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Allantois | Embryonic, Development, Sac - Britannica
Allantois, an extra-embryonic membrane of reptiles, birds, and mammals arising as a pouch, or sac, from the hindgut. In reptiles and birds it expands ... www.britannica.com
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allantois
allantois Phys. (əˈlæntəʊɪs) [mod.L. in form, a factitious sing. f. the earlier form allantoīdes, ad. Gr. ἀλλαντο-ειδής: see allantoid.] The fœtal membrane (so named by ancient anatomists from its form in a calf) found only in mammals, birds, and reptiles, which lies between the amnion and chorion, ... Oxford English Dictionary
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Allantois | Radiology Reference Article - Radiopaedia.org
The allantois refers to one of the fetal membranes that contributes to umbilical cord formation. It takes part in waste material collection ... radiopaedia.org
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Allantois - MeSH - NCBI
An extra-embryonic membranous sac derived from the YOLK SAC of REPTILES; BIRDS; and MAMMALS. It lies between two other extra-embryonic membranes, the AMNION ... www.ncbi.nlm.nih.gov
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The murine allantois: a model system for the study of blood vessel ...
The allantois is the embryonic precursor of the umbilical cord in mammals and is one of several embryonic regions, including the yolk sac and dorsal aorta, that ... pmc.ncbi.nlm.nih.gov
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Allantois Definition, Function & Structure - Lesson - Study.com
The allantois represents a fetal membrane located just below the chorion. The allantois facilitates gas exchange and serves as a storage site for waste ... study.com
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ALLANTOIS Definition & Meaning - Merriam-Webster
The meaning of ALLANTOIS is a vascular fetal membrane of reptiles, birds, and mammals that is formed as a pouch from the hindgut and that in placental ... www.merriam-webster.com
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Isl Identifies the Extraembryonic Mesodermal/Allantois Progenitors ...
The allantois is derived from the extraembryonic mesoderm; however, a detailed lineage map of the allantois's cell types and fate, and their ... onlinelibrary.wiley.com
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The mouse allantois: new insights at the embryonic–extraembryonic ...
The allantois appeared to issue from the posterior end of the embryo in register with its primitive streak, or body axis, whose physical ... royalsocietypublishing.org
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allantoic
allantoic, a. Phys. (ælænˈtəʊɪk) [f. allantois + -ic: cf. mod.Fr. allantoïque.] Of or belonging to the allantois.1836 Todd Cycl. Anat. & Phys. I. 47/1 Certain acids almost peculiar to individual animals such as the..allantoic. 1850 Daubeny Atom. Theory xi. (ed. 2) 365 The allantoic fluid of the cow.... Oxford English Dictionary
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Urachal diverticulum
A urachal diverticulum (also vesicourachal diverticulum) is a congenital disorder caused by the partial persistence of the allantois. The allantois, which later becomes the urachus, connects an embryo's bladder to the yolk sac. wikipedia.org
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allantoid
allantoid, a. and n. Phys. (əˈlæntɔɪd) [mod. ad. Gr. ἀλλαντο-ειδής; f. ἀλλᾶντ- sausage + -ειδής shaped: see -oid, and cf. mod.Fr. allantoïde.] A. adj. Of or pertaining to the allantois.1633 P. Fletcher Purple Isl. ii. xxiii, The last, from Urine-lake with waters base, In the allantoid sea empties hi... Oxford English Dictionary
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Amnion
The amnion, along with the chorion, the yolk sac and the allantois protect the embryo. The amnios consists of two layers:one is the granular layer, continued upon the inner or foetal surface of the allantois, and thence upon the umbilical wikipedia.org
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