MEDULLA OBLONGATA -
Conical in appearance. Lower most part of hind brain. It's lumen is metacoel or 4th ventricle.
An oval mass pons virolli lies above medula oblongeta. It connects medulla to higher brain centres. It controls respiration.
FUNCTIONS-
Cardiac centre. Respiratory centre. Varodilation. Vasoconstriction. Peristalasis. Deglutination. Gland secretion.