The cortex is the main body of the hair composed of elongated and fusiform (spindle-shaped)
cells. It may contain cortical fusi, pigment granules, and/or large oval-to-round-shaped structures
called ovoid bodies.
Cortical fusi in Figure 15 are irregular-shaped airspaces of varying sizes. They are commonly
found near the root of a mature human hair, although they may be present throughout the length
of the hair.
F