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.
part i part ii 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 lever rigid bar that turns about an axis of rotation or a fulcrum a