English definition of Thorax

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Definition of thorax

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Thorax (n.) The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix..

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Episternum :: Episternum (n.) One of the lateral pieces next to the sternum in the thorax of insects.

Stethoscope :: Stethoscope (n.) An instrument used in auscultation for examining the organs of the chest, as the heart and lungs, by conveying to the ear of the examiner the sounds produced in the thorax..

Thoracic :: Thoracic (a.) Of or pertaining to the thorax, or chest..

Echoscope :: Echoscope (n.) An instrument for intensifying sounds produced by percussion of the thorax.

Prothorax :: Prothorax (n.) The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.

Prosoma :: Prosoma (n.) The anterior of the body of an animal, as of a cephalopod; the thorax of an arthropod..

Prosternum :: Prosternum (n.) The ventral plate of the prothorax of an insect.

Disjunct :: Disjunct (a.) Having the head, thorax, and abdomen separated by a deep constriction..

Pleurobranch :: Pleurobranch (n.) Any one of the gills of a crustacean that is attached to the side of the thorax.

Alitrunk :: Alitrunk (n.) The segment of the body of an insect to which the wings are attached; the thorax.

Endophragma :: Endophragma (n.) A chitinous structure above the nervous cord in the thorax of certain Crustacea.

Hydrothorax :: Hydrothorax (n.) An accumulation of serous fluid in the cavity of the chest.

Pleura :: Pleura (n. fem.) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane.

Thorax :: Thorax (n.) The part of the trunk between the neck and the abdomen, containing that part of the body cavity the walls of which are supported by the dorsal vertebrae, the ribs, and the sternum, and which the heart and lungs are situated; the chest..

Baenomere :: Baenomere (n.) One of the somites (arthromeres) that make up the thorax of Arthropods.

Endothorax :: Endothorax (n.) An internal process of the sternal plates in the thorax of insects.

Abdomen :: Abdomen (n.) The belly, or that part of the body between the thorax and the pelvis. Also, the cavity of the belly, which is lined by the peritoneum, and contains the stomach, bowels, and other viscera. In man, often restricted to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity..

Abdomen :: Abdomen (n.) The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda..

Prothoracic :: Prothoracic (a.) Of or pertaining to the prothorax.

Brachyura :: Brachyura (n. pl.) A group of decapod Crustacea, including the common crabs, characterized by a small and short abdomen, which is bent up beneath the large cephalo-thorax. [Also spelt Brachyoura.] See Crab, and Illustration in Appendix..