Chest movement

Chest movement refers to the dynamic displacement of the chest wall—comprising the ribs, intercostal muscles, diaphragm, and associated connective tissues—during breathing. Inhalation is accomplished primarily by contraction of the diaphragm (which increases the vertical dimension of the thorax) and the external intercostal muscles (causing the ribs to lift with a bucket-handle and pump-handle motion, increasing transverse and anterior-posterior chest dimensions)[5][1][3]. Expiration during quiet breathing is generally passive, relying on the elasticity of the lungs and thoracic cage[4]. The coordinated movement of the chest wall allows for air entry into the lungs and is fundamental to physiological gas exchange[2][3]. Deviations in chest movement patterns may indicate pathological involvement, such as neuromuscular disease, restrictive lung disorders, or trauma[3]. There is no recognized canonical molecule, receptor, or protein termed "Chest movement," and thus it does not fit into structured biomedical target categorizations. If you are seeking a specific molecular or receptor target involved in respiratory mechanics, examples would include "Diaphragm muscle," "Acetylcholine receptor (nicotinic, muscle)," or "Intercostal muscle fiber," rather than the mechanical process termed "chest movement." If more specific information about a molecular or cellular target involved in chest wall movement is needed, please clarify the request.

Other names

Chest wall motionThoracic movementRib cage displacementRespiratory mechanics