10.6 POJA-L2074+3373+3372
Title: Nail (unguis)
Description:
(A): Scheme fetal thumb, human. (B): Scheme adult nail bed, human. See also (A).
(1) Eponychium, nail fold. (8) Stratum corneum.
(2) Nail root. (9) Stratum lucidum.
(3) Nail plate. (10) Stratum germinativum.
(4) Nail bed, hyponychium as extension of the nail matrix. (11) Lunula, the visible part of the nail matrix below the nailplate.
(5) Epidermis. (12) Nail matrix, comprising 3 sectors, i.e.
(6) Future tendon (aponeurosis). (13) external layer with longitudinal fibers.
(7) Enchondral ossification in distal digit cartilage. (14) middle or intermediate layer with crossed fibers.
(15) internal or inner layer with longitudinal fibres.
(16) Tendon connection from the nail root to the underlying bone.
(C, D): Nail, survey and detail, stain trichrome Goldner, human fetus.
The identification of the layers can be deduced from the schemes in (A, B).
(12a) Ventral nail matrix. (12b) Dorsal nail matrix.
Keywords/Mesh: skin, fetus, nail, unguis, nail bed, hyponychium, eponychium, histology, POJA collection
Title: Nail (unguis)
Description:
(A): Scheme fetal thumb, human. (B): Scheme adult nail bed, human. See also (A).
(1) Eponychium, nail fold. (8) Stratum corneum.
(2) Nail root. (9) Stratum lucidum.
(3) Nail plate. (10) Stratum germinativum.
(4) Nail bed, hyponychium as extension of the nail matrix. (11) Lunula, the visible part of the nail matrix below the nailplate.
(5) Epidermis. (12) Nail matrix, comprising 3 sectors, i.e.
(6) Future tendon (aponeurosis). (13) external layer with longitudinal fibers.
(7) Enchondral ossification in distal digit cartilage. (14) middle or intermediate layer with crossed fibers.
(15) internal or inner layer with longitudinal fibres.
(16) Tendon connection from the nail root to the underlying bone.
(C, D): Nail, survey and detail, stain trichrome Goldner, human fetus.
The identification of the layers can be deduced from the schemes in (A, B).
(12a) Ventral nail matrix. (12b) Dorsal nail matrix.
Keywords/Mesh: skin, fetus, nail, unguis, nail bed, hyponychium, eponychium, histology, POJA collection