How would you classify an articulation between two flat bones joined by short, collagenous fibers that allows little movement?

The correct answer is fibrous joints.

Articulation is termed as the point of contact which is between bones which are being joined by Collagenous fiber, and they are short and allows little movement which is referred to as fibrous joints.

Fibrous joints has bones which are being held by connective tissue which is rich in collagen fibers and they do permit some movement.

Joints can be classified as functionally and structurally. In functional classification joints are being based on movement permission, and in structural classification joints are being based on anatomical characteristics.

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condenser is used to focus in the light microscope.