What is the role of the hippocampus in the limbic system?

The thalamus is a major coordinating center for sensory and motor signaling.The limbic system, along with the hypothalamus, is involved in the regulation of sexual behavior, expression of emotional reactions, and motivation.The amygdala, along with other structures of the limbic system, is involved in the expression of emotional reactions. The hippocampus, along with other structures of the limbic system, is involved in processing of memory and spatial navigation. The midbrain is located between the thalamus/hypothalamus of the forebrain and pons of the hindbrain.The medulla of the brain contains centreswhich control respiration, cardiovascular reflexes and gastric secretions. The brain stem forms the connections between the brain and spinal cord. Three major regions make up the brain stem; mid brain, pons and medulla oblongata