The Human Hypothalamus

4F: LEVEL 4 FIBERS: The myelinated fibers of the fornix are prominent at this level, running through the lateral hypothalamic area. Fibers from the optic chiasm have diverged laterally to form the optic tracts on either side of the infundibulum (the infundibular projection from the base of the hypothalamus is often called the MEDIAN EMINENCE; the bulging base of the hypothalamus in this region is sometimes called the TUBER CINEREUM or "gray bump" since its gray matter contrasts with the white of the optic chiasm and tracts).

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