coelom


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coelom

 [se´lom]
body cavity, especially the cavity in the mammalian embryo between the somatopleure and splanchnopleure, which is both intra- and extraembryonic; it develops into the pleural, peritoneal, and pericardial cavities. adj., adj coelom´ic.

coelom

also

celom

(sē′ləm)
n. pl. coeloms or coe·lomata (-lə-mä′tə, -măt′ə)
The fluid-filled cavity within the body of most multicellular animals, except some invertebrates such as flatworms and cnidarians, that lies between the body wall and the digestive tract and is formed by the splitting of the embryonic mesoderm into two layers. Also called body cavity.

coe·lom′ic (sĭ-lŏm′ĭk, -lō′mĭk) adj.

ce·lom

, celoma (sē'lŏm, sē-lō'mă)
1. The cavity between the splanchnic and somatic mesoderm in the embryo.
Synonym(s): coelom, coeloma.
2. Synonym(s): intraembryonic celom
3. Synonym(s): body cavity.
[G. koilōma, a hollow]
Coelomclick for a larger image
Fig. 112 Coelom . Location.

coelom

the main body cavity of most animals with three body layers, being a fluid-filled space between inner and outer layers of MESODERM. The coelom often has tubes connecting to the outside called COELOMODUCTS. In simple animals, e.g. the ANNELIDS, the coelom acts as a store for excretory products and gametes, prior to expulsion to the outside.
References in periodicals archive ?
A yellow, soft, 2.5 X 2-cm subcutaneous mass was present on the left side of the caudoventral coelom and evidence of moderate pododermatitis was present on the plantar surface of both feet.
1936) (rejecting a literal interpretation of the ad coelom doctrine and holding that landowners only own "the space above the ground" the owner "can occupy or make use of as "[a]ll that lies beyond belongs to the world").
Arthropods have a true coelom, a small brain, an extensive nervous system, and separate sexes.
Neither of these are present either in the pericardial gland or pericardial coelom. The pericardial coelom contains concretions of various sizes, consistencies, and colors.
All feeding larvae of starfish share similarities in coelom formation, gut function, ciliary structures, and feeding behavior, while nonfeeding starfish larvae are distinguished mainly by the loss of these traits and the presence of large amounts of nutritive yolk (Chia and Walker 1991).
Kimberella is the first known animal that paleontologists can be sure had a coelom, he says.
Abbreviata terrapenis, Physaloptera retusa, Skrjabinoptera phrynosoma and Thubunaea iguanae were found in the stomach; Oochoristica scelopori and Thubunaea intestinalis were found in the small intestine; Spauligodon giganticus was found in the large intestine and Macdonaldius grassi and Piratuba prolifica were found in the coelom. For the helminths not attaining maturity in Sceloporus jarrovii, 16 (4%) lizards were infected with Ascarops sp., five (1%) with Mesocestoides sp., two (1%) with Centrorhynchus sp., one ([less than] 1%) with Gongylonema sp.
Another one is the image of the locust coelom, which has many microgrooves without clear boundary.
The internal anatomy has been described as being similar to other sea cucumbers of the Stichopus genus, with a large and undivided coelom filled with fluid (Sewell 1987).
These foldings separate the intra-embryonic coelom from the extra-embryonic coelom.
Kwon, "Pattern development during pericardial coelom formation and specification of the cardiomyocyte cell population by N-cadherin and the Drosophila armadillo protein homologue in the early chick embryo," Molecular Biology of the Cell, vol.