How does an aponeurosis differ from a tendon structurally

Structurally, an aponeurosis is different from a tendon due to the presence of fibroblasts.

Explanation:

Structurally, an aponeurosis is made up of dense fibrous connective tissue with fibroblasts and groups of collagenous fibers. Fibroblasts are the principal cells that synthesize collagen, glycoaminoglycans, and proteoglycans, of the extracellular matrix. Aponeuroses appear as a transparent and flat white sheath. On the other hand, a tendon is primarily made up of collagenous fibers without fibroblasts. Tendons appear shiny.

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