The autonomic centers that controls blood pressure, heart rate and digestion are located in the medulla oblongata.
This is also known as the myelencephalon. It is the lower half of the brainstem.
This part of the body is what controls such actions as cardiac, respiratory, as well as vomiting. Centers in the oblongata helps to regulate blood pressure and heart rate.
It also helps to regulate the dilation of a person's pupils and several other body functions.
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