- Basal nuclei (basal ganglia): grey matter masses in the basal white core of each cerebral hemisphere, lateral to thalamus, forming the extrapyramidal system.
- Anatomically: corpus striatum, claustrum, amygdaloid body; functionally also substantia nigra and subthalamus.
Corpus Striatum: Parts
Parts of the corpus striatum
Structure
Caudate nucleus
- Shape and location
- Comma-shaped; surrounds thalamus; head, body, tail form floor of anterior horn, floor of central part, and roof of inferior horn of lateral ventricle
- Subdivided by
- —
- Parts
- Head, body, tail
Lentiform nucleus
- Shape and location
- Lens-shaped; deep to insula; lateral boundary of internal capsule
- Subdivided by
- External medullary lamina
- Parts
- Putamen (lateral), globus pallidus (medial)