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A) Their is a logical reason why food makes us salivate. Our brain subconsciously react to the smell, slight and even thought of food with the increased secreation of saliva. This is because we need saliva to help teeth chew and prepare food to be digested.
B) The part of the brain responsible for this salivery refiex is the medulla oblongata control the secretion of Saliva in mouth.
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Medulla oblongata is long stem like structure that form brain stem. It looks like cone shaped structure that performs several functions. It contain cardiac, respiratory,vomiting, sneezing centers.
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