Chronic bronchitis isnât contagious, but itâs a serious health problem that requires a doctorâs care. Acute, which can last for 1 to 3 weeks. Itâs usually caused by cold or flu viruses.
body movement, motion of all or part of the body, especially at a joint or joints. Body movements include abduction, adduction, extension, flexion, rotation and circumduction.
Mechanics in Exercise. Movement in the body is produced by a system of levers. These series of levers work together to produce coordinated action, some by actual movement (dynamic) and others by stabilization (static). Definitions.