definition of medulla oblongata
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The continuation of the spinal cord within the skull, forming the lowest part of the brainstem and containing control centres for the heart and lungs.
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It is the posterior -most part of the brain and continuous with the spinal cord .It controls involuntary function of visceral organ through a number of centres like Cardiac Centre (Heartbeat) ,respiratory Centre (breathing) , salivary Centre (secretion of saliva) etc. It also has the reflex Centre to control coughing and sneezing, vomiting, urinating, defaceation, blood pressure ,swallowing of food, peristalsis etc.
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