The cerebrum constitutes the largest part of the brain—responsible for memory, language/speech, sensing, and emotional response—and is divided into the frontal, temporal, parietal, and occipital lobes in both hemispheres. These lobes make up the cerebral cortex, or the outer layer of the cerebrum. Deeper regions of the cerebrum include the amygdala, hippocampus, basal ganglia, thalamus, hypothalamus, pituitary gland, and olfactory bulb (just to name some of the major regions).