Medical Definition of Amygdaloid nucleus

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Amygdaloid nucleus: A small oval structure in the temporal lobe of the brain that is closely connected to the hypothalamus, the hippocampus, and the cingulate gyrus. The amygdaloid nucleus is part of the olefactory and limbic systems and plays a role in the sense of smell, motivation, and emotional behavior.

It was named the amygdaloid nucleus because anatomists thought it was shaped like an almond. From the Greek amydale (almond) + the Greek eidos (like). Also called the amygdala, amygdaloid body, amygdaloid complex, corpus amygdaloideum, and nucleus amygdalae.

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Reviewed on 12/21/2018

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