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Right atrium x left atrium
Right ventricle x left ventricle
Inspiration x expiration
Fire extinguisher (carbon dioxide) x
fire producer(oxygen)
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Ascending colon x descending colon
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RIGHT HAND X LEFT HAND
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Right hemisphere x left hemisphere
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Upward facing x downward facing
Clockwise rotation x anticlock wise rotation
Vertical axis x horizontal axis
Vertical vertebra x horizontal diaphragm
Vertical spinal cord x horizontal spinal nerves
Vertical corticospinal tracts x horizontal corpus callosum or association fibres
Central x peripheral
Parallel planes x perpendicular planes
Cranial x caudal
Cranial
mouth x caudal anus