The Human Hypothalamus

Labeling Unlabeled Labeled Cell 1C2C3C4C5C6C Fiber 1F2F3F4F5F6F

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).