The cardiovascular centre is a part of the human brain responsible for the regulation of the rate at which the heart beats through the nervous and endocrine systems. It is found in the medulla oblongata. Normally, the heart beats without nervous control, but in some situations (e.g., exercise, body trauma), the cardiovascular centre is responsible for altering the rate at which the heart beats. It also mediates respiratory sinus arrhythmia.

Answer this question based on the passage: where is the cardiac center located in the brain? Okie... think carefully first, then make a decision:
The relevant information is: It is found in the medulla oblongata. So, the answer is the medulla oblongata.