Anatomy
hair shaft
Definitions related to hair shaft:
  • The portion of hair that extends beyond the surface of the skin. It contains three layers: the cuticle, cortex, and medulla (not always present).
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • (shaft of the hair) The segment of the hair that projects above the skin surface.
    NCI
    U.S. National Cancer Institute, 2021
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