corium

(kôr'ē-əm, kōr'-)

[Latin, skin.]

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The dermis; true skin; the fibrous inner layer of the skin just beneath the epidermis, derived from the embryonic mesoderm, well supplied with nerves and blood vessels and containing hair roots and sebaceous and sweat glands. See also dermis.

• coronary c. — specialized corium at the coronary band of ungulates providing nourishment via papillae which extend into the hoof. Separated from the skin by the perioplic corium.
• cuneal c. — corium of the frog of the equine hoof.
• foot c. — see cuneal corium (above).
• laminar c. — corium of the sensitive laminae of the hoof. Bears laminae which interdigitate with lamellae of the hoof wall. Supplies nutrition to the horn and to the white zone of interlamellar horn.
• papillary c. — see coronary corium (above).
• perioplic c. — continuous with the corium of the skin, forming a narrow band between the skin and the coronary corium.
• solear c. — the corium of the sole of the foot, supporting the horn of the sole.