The internal capsule is divided into superior and inferior parts. It is located medially between the caudate nucleus and thalamus, and laterally between the lentiform nucleus. It contains ascending and descending tracts that connect the cortex to lower brain structures. The internal capsule has anterior, genu, posterior, retrolentiform, and sublentiform parts that contain different tracts. We need to learn about the internal capsule because it is important for understanding the pathways involved in motor and sensory functions.