Limbic System Anatomy

Limbus Definition

• Limbus is a Greek term meaning "ring."
• The limbic system is a ring-like structure located in the center of the brain.

Limbic System Components

• The limbic system contains cortical areas and key subcortical structures deep within the brain.
  • Hippocampus (shown in green)
  • Anterior thalamic nuclei
  • Amygdala
  • Adjacent cortical areas

Corpus Callosum and Surrounding Cortical Areas

• Corpus Callosum:
  • A large fiber bundle.
  • Connects the left and right hemispheres of the brain.
• Cortical Areas:
  • Cingulate gyrus: Located dorsally, surrounding the corpus callosum.
  • Retrosplenial cortex: Dorsal areas.
  • Perirhinal cortex: Cortical areas surrounding the hippocampus ventrally.