The two paired cardiovascular centers that provide nervous control over heart rate are located in which part of the brain?

1. Heart rate is not purely autorhythmic; it is also modulated by nervous input. 2. This nervous control over heart rate is centralized within two paired cardiovascular centers. 3. These centers, the cardioaccelerator and cardioinhibitory regions, are located in the medulla oblongata. 4. The cerebellum, hypothalamus, and motor cortex are not identified as the site of the cardiovascular centers described. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.4, p. 867_