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19 May, 08:22

A "motor homunculus" can be visualized as an overlay on the precentral gyrus. The reason why the facial region of this homunculus covers such a large surface area is because

(A) our ears are large for hearing.

(B) our eyes are large for seeing.

(C) we have very expressive faces.

(D) we have very sensitive lips.

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  1. 19 May, 10:27
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    Answer: the correct answer is (C) we have very expressive faces.

    Explanation:

    A cortical homunculus is a distorted representation of the human body based on a "neurological map" of the areas and proportions of the human brain.
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