The face is the only part of the human anatomy which has been found to display a variation in muscle structure from one another.
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True
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False
The statement is false because muscle structure variation exists throughout human anatomy, not just in the face. All human muscles show individual variation in size, insertion points, and fiber composition. The face is notable for its complexity and emotional expressiveness, but it is not unique in showing anatomical variation between individuals.
The statement claims the face is the ONLY part of the body that shows person-to-person variation in muscle structure. That is false. Individual muscular variation occurs throughout the human body, not just the face. The textbook example is the palmaris longus in the forearm, the most variable muscle in humans, absent in roughly 1.5%-64% of people depending on population; other well-known variants include the plantaris, sternalis, and levator claviculae. Facial muscles do vary between individuals (e.g., the risorius and platysma), but the word 'only' is what makes the sentence untrue, because comparable variation is documented elsewhere. The commonly repeated TRUE face fact is different, that facial muscles are the only muscle group inserting into skin rather than bone. That distinct claim is true, but it is not what this statement asserts. Marking the statement False is therefore correct.