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allantois

Definition of the noun allantois

What does allantois mean as a name of something?

noun - plural: allantoises

  1. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)
    • domain: mammal / mammalian
    • lexical domain: Animals - nouns denoting animals
    • more generic term: fetal membrane = any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus

Alternative definition of the noun allantois

noun

  1. [anatomy] A sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

Printed books with definitions for allantois

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Google previewLondon Medical and Surgical Journal (1837)

The allantois is a sac found between the chorion and amnios in the cow, sheep,, bitch, reptiles, and birds. This was denied to exist in the human embryo. M. Velpeau has detected a transparent layer, of a slightly greenish colour, not serous, but ...

Google previewCliffsAP Biology, 3rd Edition (2011)

by Phillip E Pack

The allantois is a layer , ...

Google previewFirst Lines of Physiology (1844)

Designed for the Use of Students of Medicine by Daniel Oliver

The allantois is a little membranous pouch, lying between the chorion and amnion ...

Google previewThe Bare Bones (2016)

An Unconventional Evolutionary History of the Skeleton by Matthew F. Bonnan

Because the allantois is a large sac connected to the region that will develop into the urinary bladder and cloaca, it can act like the astronaut's MAG, absorbing, storing, and sequestering metabolic wastes generated by the embryo.

Google previewMedical Terminology & Anatomy for ICD-10 Coding (2014)

by Betsy J. Shiland

The allantois is an embryonic structure that assists in waste removal and gas exchange. It later develops into the placenta and umbilical cord, which share similar functions. The umbilical cord is the tissue that connects the embryo to the ...

Google previewHuman Embryology (1892)

by Charles Sedgwick Minot

444, the allantois is the direct continuation of the intestinal canal, and the urogenital ducts open into the allantoic portion or the part of the ...

Google previewJournal of the American Medical Association (1901)

The allantois is the chief agent of the early circulation; it contains two arteries and mo veins. The arteries are, at first, branches of the abdominal aorta, but subsequently, when the primary aorta: coalesce. they become branches of the ...

Google previewPrinciples of Development (2011)

by Lewis Wolpert, Cheryll Tickle

The allantois is a set of extra-embryonic membranes that develops in many vertebrate embryos. In bird and reptile embryos it acts as a respiratory surface, while in mammals its blood vessels carry blood to and from the placenta. An allele is a ...

Google previewJAMA (1901)

The Journal of the American Medical Association

The allantois is the chief agent of the early circulation; it contains two arteries and two veins. The arteries are, at first, branches of the abdominal aorta, but subsequently, when the primary aortae coalesce, they become branches of the ...

Google previewReview Questions for Gross Anatomy and Embryology (1993)

by T.R. Gest, W.E. Burkel

The allantois is an endodermal outpouching of the yolk sac. Early on , it is attached to the hindgut, but when the urorectal septum divides the cloaca, it becomes associated with the urinary bladder and contributes to its development ...

Google previewHerpetology (2016)

by CTI Reviews

Allantois: Allantois is a part of a developing animal conceptus (which consistsofall embryonic and extraembryonic tissues).Ithelpsthe embryoexchange gases and handle ...

Google previewLife, The Science of Biology (2016)

by CTI Reviews

Allantois is a part of a developing animal conceptus (which consists of all embryonic and extraembryonic tissues). It helps the embryo exchange gases and handle liquid waste. The allantois, alongwith the amnion and chorion (other embryonic ...

Google previewElements of Physiology (1842)

by Joh Müller

The allantois is an elongated vascular saccu- lus, which protrudes through the umbilicus, and increases in size until it becomes a large vascular sac. The pedicle of this sac is the urachus which passes with the ductus vitello intestinalis through ...

Google previewBiology (2016)

Biology, Biology by CTI Reviews

Allantois: Allantois is a part of.

Google previewCracking the AP Biology Exam, 2013 Edition (2012)

by Princeton Review, Kim Magloire

The allantois is an extraembryonic sac that gets rid of wastes. The similarity suggests that humans and chimpanzees are more closely related than humans and dogs. Because these two organisms share similar amino acid sequences, ...

Google previewReproductive Physiology of Mammals , From Farm to Field and Beyond (2016)

by CTI Reviews

Allantois: Allantois is a part of a developing animal conceptus (which consists of all embryonic and extraembryonic tissues). It helps the embryo exchange gases and handle liquid waste. The allantois,along with the amnion andchorion (other ...

Google previewHuman Embryology and Developmental Biology (2016)

Biology, Human biology by CTI Reviews

CHAPTER HIGHLIGHTS: KEY TERMS, PEOPLE, PLACES, CONCEPTS Allantois : Allantois is a part of a developing animal conceptus (which consists of all embryonic and extraembryonic tissues). It helps the embryo exchange gases and ...

Google previewBiodynamic Craniosacral Therapy (2010)

by Michael J. Shea

The allantois is the future bladder and it protrudes into the umbilical cord, acting as a guide for the umbilical veins and arteries. it is amazing when you think about how much of our body develops outside the body wall! consequently there is ...

Google previewJohnson's Universal Cyclopaedia (1894)

The third accessory embryonic organ is the allantois, so called from the Greek cUASs, iWarros, a " sausage," because of its elongated cylindrical form in some cases. The allantois is an outgrowth from the hind-gut or lower part of the intestine.

Google previewJohnson's Universal Cyclopædia (1899)

A New Edition by Charles Kendall Adams

The allantois is an outgrowth from the hind-gut or lower part of the intestine. It shows itself where typically developed, but not in the human embryo, as a small |. or diverticulum, shaped somewhat like the finger of a glove, which protrudes from ...

Google previewJohnson's Universal Cyclop:dia (1893)

A New Edition

The allantois is an embryonic structure which characterizes exclusively vertebrates alx>ve and including Reptilia. The amnion is another sac, formed by the folding of the germinal layer of the embryo over its back; the edges of the folds then ...

Google previewThe universal cyclopaedia (1900)

The third accessory embryonic organ is the allantois, so called from the Greek aKKas. aWarros, a "sausage," because of its elongated cylindrical form in some cases. The allantois is an outgrowth from the hind-gut or lower part of the intestine.

Google previewUniversal Cyclopaedia and Atlas (1908)

The allantois is an outgrowth from the hind-gut or lower part of the intestine. It shows itself where ty ically developed, but not in the human embryo, as a small ljud or diverticulum, shaped somewhat like the finger of a glove, which rotrudes from ...

Google previewAnatomy and Dissection of the Fetal Pig (1997)

by Warren F. Walker, Dominique G. Homberger

The allantois is a large sac that grows out from the fetus. Its stalk was seen in the umbilical cord, and the intraembryonic part of it becomes the urinary bladder. When the chorionic vesicle is opened, you are looking into the cavity of the allantois ...

Google previewUniversal cyclopædia and atlas (1909)

The allantois is an embryonic structure which characterizes exelusivelv vertebrates above and including lieptilia. The amnion is another sac, formed by the folding of the germinal layer of the embryo over its back ; the edges of the folds then ...

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Video about allantois

Allantois Meaning

Video shows what allantois means. A sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles..

Quotes about allantois

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Scrabble value of A1L1L1A1N1T1O1I1S1

The value of this 9-letter word is 9 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

Anagrams of ALLANTOIS

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