Neurosurgery notes/Anatomy/Cortex/Temporal lobe/Mesial temporal lobe/Amygdala

Amygdala

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Mesial temporal lobe
  • Divided into
    • Temporal amygdala (Principal amygdala)
      • Composed by
        • Series of grey matter nuclei classified into 3 main groups
          • Basolateral group
          • Corticomedial group
            • Semilunar gyrus part of this group
          • Central group
      • Located within boundaries of uncus
      • Relations: amygdala (8/5)
          • Superiorly
            • Globus pallidus (6)
          • Inferiorly
            • Temporal horn (10)
              • Amygdala forms the anterior wall of the temporal horn and also constitutes the most anterior part of the roof of the temporal horn above the uncal recess and the head of the hippocampus, anterior to the inferior choroidal point,
            • Hippocampal head (11)
          notion image
        • Medially
          • Anterior and posterior segments of the uncus;
        • Anteroinferiorly
          • Entorhinal area
        • Anterosuperiorly
            • Semilunar gyrus (4) of the anterior segment of the uncus
            notion image
    • Extratemporal amygdala (extended amygdala)
      • Located in primodial floor of the lateral ventricle
      • Part of the basal forebrain