Which is an action of the spinalis?

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Multiple Choice

Which is an action of the spinalis?

Explanation:
The spinalis is the inner, most medial part of the erector spinae that runs along the vertebral column. Its main function is to extend the vertebral column (and the head) when both sides contract, helping you straighten up from a bent posture. It isn’t a primary flexor of the spine, nor is it the main mover for rotating the trunk or moving the shoulder girdle. So extending the vertebral column is the action of the spinalis.

The spinalis is the inner, most medial part of the erector spinae that runs along the vertebral column. Its main function is to extend the vertebral column (and the head) when both sides contract, helping you straighten up from a bent posture. It isn’t a primary flexor of the spine, nor is it the main mover for rotating the trunk or moving the shoulder girdle. So extending the vertebral column is the action of the spinalis.

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