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.
The bodyâs movements are generated from an elaborate interaction between brain, spinal cord, nerves and muscles. Most muscle movements are voluntary, although the thoughts or stimuli that generate them are sometimes unconscious. Involuntary body movements can result from conditions that affect any part of this intricate mechanism.