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.
Muscles are complex structures that cause movement in the body. 1  Heart muscle pumps blood (cardiac muscle).  Skeletal muscle moves the external body parts, like the arms and legs, neck, back, trunk, and the face.