Amygdala anatomy (coronal T2WI MRI)

Case contributed by Dr Azza Elgendy

Amygdala anatomy

The anatomy of the amygdala.

Endorhinal sulcus is the anatomical landmark for the anterior extension of the amygdala identified by red arcuate line (4). The amygdala; the green structure (2). The two blue dots represent the optic tracts (3). The vertical purple lines represent the anterior limbs of the fornix diving through the hypothalamus (1).


Functional connections of the amygdala

The main output (efferent) fibers of the amygdala:

  1. Ventral amygdalofugal pathway: longer pathway dives through septal region, brain stem, thalamus, hypothalamus, and finally into the sensory cortex. 
  2. Stria terminals (very similar to the fornix in relation to the anterior commissure); it is divided into three parts in relation to the anterior commissure:
    • precommissure fibers
    • commissure fibers 
    • post commissure fibers 
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Case information

rID: 33594
Published: 18th Jan 2015
Last edited: 3rd Apr 2019
Inclusion in quiz mode: Excluded

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