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To: Brumar89 who wrote (107028)3/31/2005 9:16:21 PM
From: Lane3  Read Replies (1) | Respond to of 793670
 
Facial muscles are voluntary muscles

You are perhaps unfamiliar with the yawn, the squint, the twitch, and the sneeze, for example? <g>

It takes consciousness to keep the mouth closed. Without control, the jaw drops open, like when we sleep. I'm sure you noticed Terri's gaping mouth.