In which part of the brain is the medulla oblongata located?

The medulla oblongata is part of the brainstem and is sometimes referred to as the "reptilian brain" because it is associated with the more primitive functions of the brain that regulate basic life-sustaining processes. It controls functions such as heart rate, blood pressure, and respiration, which are essential for survival and considered instinctual rather than voluntary actions. This terminology highlights its evolutionary significance, as these functions are fundamental to all vertebrates, including reptiles.

The other parts of the brain mentioned in the question are not directly associated with the medulla oblongata. The limbic system is primarily involved in emotion and memory, the cerebellum plays a critical role in motor control and coordination, and the cerebral cortex is responsible for higher-order functions such as reasoning, abstract thought, and decision-making. Understanding the specific roles of these brain areas helps to clarify why the medulla oblongata is most accurately identified as part of the reptilian brain.