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Elevation and depression are movements above and below the horizontal. The words derive from the Latin terms with similar meanings. [c] Elevation is movement in a superior direction. [19] For example, shrugging is an example of elevation of the scapula. [20] Depression is movement in an inferior direction, the opposite of elevation. [21]
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The upper portion of the trapezius can be developed by elevating the shoulders. Common exercises for this movement are any version of the clean, particularly the hang clean, and the shoulder shrug. The uppermost area can be trained through neck extension. Middle fibers are developed by pulling shoulder blades together.
Sydenham's chorea, also known as rheumatic chorea, is a disorder characterized by rapid, uncoordinated jerking movements primarily affecting the face, hands and feet. [1] Sydenham's chorea is an autoimmune disease that results from childhood infection with Group A beta- haemolytic Streptococcus .
The tic-like movements and swelling of the third ventricle associated with bobble-head doll syndrome are similar to that of other movement disorders caused by diseases of the corpus callosum and aforementioned basal ganglia. Because of the swelling, added pressure is applied to these formations causing their basic functions to be disturbed.
A condyloid joint is a modified ball and socket joint that allows primary movement within two perpendicular axes, passive or secondary movement may occur on a third axes. Some classifications make a distinction between condyloid and ellipsoid joints; [5] [6] these joints allow flexion, extension, abduction, and adduction movements (circumduction).