In order to speak...: humans evolved unusual throat anatomy: The entrance to our windpipe is much closer to our mouth than other mammals'. To keep food etc from getting into our lungs, a muscular flap closes over it when we swallow. Deglutition is a very complex, highly coordinated motor reflex. In dementia, control of this crucial motor task is often impaired. We use our brains to do more than just think.
Answered 10/12/2017
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