“Limbic System”  

  In the body's brain, the Limbic System is a set structures including the hippocampus, amygdala, anterior thalamic nuclei, and limbic cortex, which support a variety of functions including emotion, behavior, short term memory, and olfaction.
  In the body's brain, the Limbic System, defined both functionally and anatomically, as the primitive brain part, implicated in the higher integration of visceral, olfactory, and somatic information as well as homeostatic responses including fundamental survival behaviors and past experience and feeling association.
  Examples of subsets, concepts, subjects and related entities of include:

cortical area subcortical area diencephalic structures

Stria medullaris Central gray and dorsal and ventral nuclei of Gudden

• amygdala includes:
  • basolateral nuclear complex
  • central amygdaloid nucleus
  • corticomedial nuclear complex
    • periamygdaloid cortex
• epithalamus
  • habenula
  • pineal gland
• hippocampus
  • hippocampal CA1 region
  • hippocampal CA2 region
  • hippocampal CA3 region
  • dentate gyrus
    • hippocampal mossy fibers
  • brain fornix
• hypothalamus
  • lateral hypothalamic area
  • anterior hypothalamic region (anterior hypothalamus)
    • anterior hypothalamic nucleus
    • organum vasculosum
    • paraventricular hypothalamic nucleus
    • preoptic area
    • suprachiasmatic nucleus
    • supraoptic nucleus
  • middle hypothalamus (tuberal hypothalamic region)
    • arcuate nucleus of hypothalamus
    • dorsomedial hypothalamic nucleus
    • hypothalamo-hypophyseal system
      • median eminence
      • pituitary gland
        • adenohypophysis (anterior pituitary gland)
        • intermediate lobe of pituitary (intermediate pituitary gland)
        • posterior pituitary gland (neurohypophysis)
    • tuber cinereum
    • ventromedial hypothalamic nucleus
  • posterior hypothalamus
    • mamillary bodies
  • tuberal hypothalamic region
• limbic lobe
  • gyrus cinguli
  • parahippocampal gyrus
    • entorhinal cortex
    • periamygdaloid cortex
• olfactory pathways
• parahippocampal gyrus
  • entorhinal cortex
  • periamygdaloid cortex
• perforant pathway (perforating fasciculus)
• septum of brain includes:
  • septum of brain
  • septum pellucidum
• substantia innominata

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“Hypothalamus”  

  In our body's brain, the Hypothalamus, part of the limbic system, is about the size of an almond located in the region of the brain beneath the thalamus, just above the brain stem, forming the ventral part of the diencephalon (interbrain), and plays a central role in the integrated control of feeding and energy homeostasis.
  In our body's brain, the Hypothalamus is a structure composed of distinct nuclei and less anatomically distinct areas.
  Anatomical examples of hypothalamic regions and structures include:

• lateral hypothalamic area
• anterior hypothalamic region (anterior hypothalamus)
  • anterior hypothalamic nucleus
  • organum vasculosum
  • paraventricular hypothalamic nucleus
  • preoptic area
  • suprachiasmatic nucleus
  • supraoptic nucleus
• middle hypothalamic region (tuberal hypothalamic region)
  • arcuate nucleus of hypothalamus
  • dorsomedial hypothalamic nucleus
  • hypothalamo-hypophyseal system
    • median eminence
    • pituitary gland
      • anterior pituitary gland (adenohypophysis)
      • intermediate pituitary gland (pituitary pars intermedia)
      • posterior pituitary gland (neurohypophysis)
  • tuber cinereum
  • ventromedial hypothalamic nucleus
• posterior hypothalamic region
  • mammillary bodies
• tuberal hypothalamic region

**

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“Hippocampus (Ammon's Horn)”  

Hippocampus

  In our body's brain, the Hippocampus, a curved elevation of gray matter extending the entire length of the floor of the temporal horn of each lateral ventricle, is a paired structure, with mirror-image halves in the left and right sides of the brain.
  In our body's brain, the Hippocampus, located inside the medial temporal lobe, beneath the cortical surface, belongs to the limbic system and plays a crucial role in learning, spatial navigation and in processing various forms of information such as long-term memory.
  The hippocampus includes:

• hippocampal CA1 region
• hippocampal CA2 region
• hippocampal CA3 region
• dentate gyrus
  • hippocampal mossy fibers
• brain fornix

**

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“Gyrus Cinguli (Cingulate Cortex)”  

Cingulate Gyrus

  In the body's brain, Gyrus Cinguli (Cingulate Gyrus), aka Cingulate Cortex, part of the limbic system, is one of the convolutions on the medial surface of the cerebral hemisphere, that surrounds the rostral part of the brain and interhemispheric commissure.

Cingulate Cortex

  In the body's brain, the Cingulate Cortex is divided into the frontal anterior cingulate cortex and the distal posterior cingulate cortex parts. **

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