Lentiform nucleus

The Lentiform nucleus (pronunciation: len-TIF-or-m NOO-klee-us) is a significant structure found within the brain. It is part of the basal ganglia system, which is involved in the control of voluntary motor movements, procedural learning, habit learning, eye movements, cognition, and emotion.

Etymology

The term "Lentiform" is derived from the Latin word 'lentiformis', meaning 'lens-shaped'. This is due to the lens-like shape of the nucleus when viewed in cross-section.

Structure

The Lentiform nucleus is composed of two structures: the putamen and the globus pallidus. The outer part, known as the putamen, interacts with the caudate nucleus to form the striatum. The inner part, the globus pallidus, is further divided into two segments: the globus pallidus externus and the globus pallidus internus.

Function

The Lentiform nucleus plays a crucial role in the regulation of movement and motor planning. It is also involved in the learning and execution of automatic movements and habits. Additionally, it has a role in cognitive processes and emotional responses.

Related Terms

Basal ganglia: A group of nuclei in the brain associated with a variety of functions including control of voluntary motor movements, procedural learning, habit learning, eye movements, cognition, and emotion.
Putamen: The large, round, outer part of the Lentiform nucleus.
Globus pallidus: The inner part of the Lentiform nucleus, which is further divided into two segments.
Striatum: A part of the brain that is involved in the reward system and movement. It is composed of the caudate nucleus and the putamen.
Caudate nucleus: A nucleus located within the brain's basal ganglia, involved in various functions like learning and memory.