The caudate nucleus is a telencephalic nucleus, one of the input nuclei of the basal ganglia; involved with control of voluntary movement in the brain. In neuroanatomy, a nucleus is a central nervous system structure that is composed mainly of gray matter, and which acts as a hub or transit point for electrical signals in a single neural subsystem. ... The basal ganglia are a group of nuclei in the brain associated with motor and learning functions. ... In the anatomy of animals, the brain, or encephalon, is the supervisory center of the nervous system. ...

There is a caudate nucleus on each side of the brain, each a C-shaped structure with a wider head at the front, tapering to a body and a tail.

The head and body of the caudate nucleus form the part of the floor of the anterior horn of the lateral ventricle. After the body travels briefly towards the back of the head, the tail curves back anteriorly, forming the roof of the inferior horn of the lateral ventricle. This means that a coronal (on the same plane as the face) section that cuts through the tail, will also cross the body (or head) of the caudate nucleus. The ventricular system is a fluid conducting system within the brain. ... a stylized picture of a face The face is the front of the head. ...

The caudate nucleus is related anatomically to a number of other structures. It is separated from the lenticular nucleus (a structure which includes the putamen) by the internal capsule. Together these structures form the striate body. The putamen is a structure in the middle of the brain, forming the striatum together with the caudate nucleus. ... The internal capsule is an area of white matter in the brain that separates the caudate nucleus and the thalamus from the lenticular nucleus. ... The striatum is a subcortical part of the brain consisting of the caudate nucleus and the putamen. ...