Which prefix means 'Spinal Column' when used as a prefix in anatomy?

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Multiple Choice

Which prefix means 'Spinal Column' when used as a prefix in anatomy?

Explanation:
The key idea is recognizing a combining form that literally signals the spine. The Greek root rhachis means spine, so the combining form rachi- is used in anatomy to indicate something about the spinal column. Terms built with this prefix refer to the spine or backbone, such as rachialgia (spinal pain) or rachischisis (a spinal fissure). The other options don’t point to the spine: phot- means light, phobia is fear, and later- refers to the side. So rachi- is the appropriate prefix to denote the spinal column.

The key idea is recognizing a combining form that literally signals the spine. The Greek root rhachis means spine, so the combining form rachi- is used in anatomy to indicate something about the spinal column. Terms built with this prefix refer to the spine or backbone, such as rachialgia (spinal pain) or rachischisis (a spinal fissure). The other options don’t point to the spine: phot- means light, phobia is fear, and later- refers to the side. So rachi- is the appropriate prefix to denote the spinal column.

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