hair shaft

The main part of the hair which is composed of trichocytes and is divided into the cortex and medulla. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the hair shaft is

The main part of the hair which is composed of trichocytes and is divided into the cortex and medulla. The atlas records it as a organ at the organ scale in the human body.

Where the hair shaft is

It sits within the integumentary system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the hair shaft connects to

The atlas records 5 typed relationships for it, across 4 kinds of connection. part of strand of hair.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the hair shaft. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as shaft of hair and scapus pili. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002074, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: strand of hair.
• A kind of: cutaneous appendage.
• contains: cortex of hair and cuticle of hair.
• bounding layer of: cuticle of hair.

Questions

Where is the hair shaft?

It sits within the integumentary system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the hair shaft connect to?

Part of: strand of hair.

Is the hair shaft the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.