The medulla oblongata is a primary respiratory control center. It’s main function is to send signals to the muscle that controls respiration to cause breathing to occur. There are two regions in the medulla that control respiration the ventral respiratory group stimulates expiratory movement.
<span>The amygdala is most used in times of fear, as well as for olfactory processing such as smell and pheromones, and emotional memory storage. It is located within the temporal lobes of the brain, where it receives sensory input and send signals to various parts of the brain including hypothalamus, the trigeminal nerve, and the ventral tegmental area.</span>