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thorax (n.)
1.part of an insect's body that bears the wings and legs
2.the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
3.the middle region of the body of an arthropod between the head and the abdomen
Thorax (n.)
1.(MeSH)The upper part of the trunk between the NECK and the ABDOMEN. It contains the chief organs of the circulatory and respiratory systems. (From Stedman, 25th ed)
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Merriam Webster
ThoraxTho"rax (?), n. [L., fr. Gr. �.]
1. (Anat.) 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 vertebræ, the ribs, and the sternum, and which the heart and lungs are situated; the chest.
☞ In mammals the thoracic cavity is completely separated from the abdominal by the diaphragm, but in birds and many reptiles the separation is incomplete, while in other reptiles, and in amphibians and fishes, there is no marked separation and no true thorax.
2. (Zoöl.) (a) The middle region of the body of an insect, or that region which bears the legs and wings. It is composed of three united somites, each of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of Coleoptera. (b) 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.
3. (Antiq.) A breastplate, cuirass, or corselet; especially, the breastplate worn by the ancient Greeks.
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Voir aussi
⇨ Contusion of thorax • Crushing injuries of thorax with abdomen, lower back and pelvis with limb(s) • Crushing injury of thorax and traumatic amputation of part of thorax • Fracture of bony thorax, part unspecified • Fracture of bony thorax, part unspecified | closed • Fracture of bony thorax, part unspecified | open • Fractures involving thorax with lower back and pelvis • Fractures involving thorax with lower back and pelvis with limb(s) • Fractures involving thorax with lower back and pelvis with limb(s) | closed • Fractures involving thorax with lower back and pelvis with limb(s) | open • Fractures involving thorax with lower back and pelvis | closed • Fractures involving thorax with lower back and pelvis | open • Injuries to the thorax • Multiple injuries of thorax • Open wound of thorax • Open wound of thorax, part unspecified • Open wounds involving thorax with abdomen, lower back and pelvis • Peripheral nerves of thorax • Peyrot's thorax • Superficial injury of thorax • Thorax, Hyperlucent • Transection of thorax • Unspecified injury of thorax • abscess of thorax • transection of thorax • with involvement of thorax, abdomen, lower back and pelvis
Thorax (n.) [MeSH]
Thorax (n.)
Thorax C761[ClasseHyper.]
thorax (n.)
morphologie du papillon (fr)[DomainDescrip.]
body part, part of the body[Hyper.]
insect[Desc]
thorax (n.)
torso; chest; bosom; breast[ClasseHyper.]
torso; trunk[Classe]
(sternum; breastbone)[termes liés]
poitrine (fr)[DomainDescrip.]
tronc : vue externe (fr)[DomainDescrip.]
body part, part of the body[Hyper.]
big-chested, chesty[Dérivé]
craniate, vertebrate - body, torso, trunk - insect[Desc]
thorax (n.)
body part, part of the body[Hyper.]
arthropod[Desc]
Wikipedia
The thorax (from Greek "θώραξ" - thorax, "breastplate, cuirass, corslet"[1]) is a division of an animal's body that lies between the head and the abdomen.
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In mammals, the thorax is the region of the body formed by the sternum, the thoracic vertebrae, and the ribs. It extends from the neck to the diaphragm, and does not include the upper limbs. The heart and the lungs reside in the thoracic cavity, as well as many blood vessels. The inner organs are protected by the rib cage and the sternum.
In insects and the extinct trilobites, the thorax is one of the three main divisions (or tagmata) of the creature's body, each of which is in turn composed of multiple segments. It is the area where the wings and legs attach in insects, or an area of multiple articulating plates in trilobites. In most insects, the thorax itself is composed of three segments; the prothorax, the mesothorax, and the metathorax. In extant insects, the prothorax never has wings, though legs are always present in adults; wings (when present) are restricted to at least the mesothorax, and typically also the metathorax, though the wings may be reduced or modified on either or both segments. In the Apocritan Hymenoptera, the first abdominal segment is fused to the metathorax, where it forms a structure known as the propodeum. Accordingly, in these insects, the functional thorax is composed of four segments, and is therefore typically called the mesosoma to distinguish it from the "thorax" of other insects.
Each thoracic segment in an insect is further subdivided into various parts, the most significant of which are the dorsal portion (the notum), the lateral portion (the pleuron; one on each side), and the ventral portion (the sternum). In some insects, each of these parts is composed of one to several independent exoskeletal plates with membrane between them (called sclerites), though in many cases the sclerites are fused to various degrees.
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