MEDRADSC 2RA3 Lecture Notes - Lecture 6: Basal Ganglia, Caudate Nucleus, Nucleus Accumbens

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 2RA3
• Professor: Alana Trainor

Document Summary

The basal ganglia work together to influence our behaviour. They collectively contribute to the planning & programming of muscle action & movement. Consists of the head (most anterior), body, & tail. Bulge in the anterior horn of the lateral ventricle, then follows the movement of the ventricle & ends in the roof of the inferior horn. Head of the caudate sits in the frontal (anterior) horn of the lateral ventricle. Follows parallel (follows the shape) of the lateral ventricle. Made up of the putamen (most laterally) & the globus pallidus (most medially) Separated from the insula by the claustrum (piece of gray matter) Internal segment is medial to the external segment. External segment is between the internal segment & the putamen. Together, the caudate & putamen make up the dorsal striatum. Striatum is the main input to the basal ganglia. Embedded in the cerebral peduncles of the midbrain.