cuticle (redirected from primary cuticle)

cuticle /cu·ti·cle/ (ku´tĭ-k'l)

1. a layer of more or less solid substance covering the free surface of an epithelial cell.

2. eponychium (1).

3. a horny secreted layer.

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dental cuticle  a film on the enamel and cementum of some teeth, external to the primary cuticle, with which it combines, deposited by the epithelial attachment as it migrates along the tooth.

enamel cuticle , primary cuticle a film on the enamel of unerupted teeth, consisting primarily of degenerating ameloblast remnants after completion of enamel formation.

secondary cuticle  dental c.

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cu·ti·cle (kyt-kl)

n.

1. The strip of hardened skin at the base and sides of a fingernail or toenail.

2. The outermost layer of the skin; epidermis.

3. Dead or cornified epidermis.

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cuticle

[kyo̅o̅′təkəl]

Etymology: L, cuticula, little skin

1 See epidermis.

2 the sheath of a hair follicle.

3 the thin edge of cornified epithelium at the base of a nail.

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cuticle (kyōō´tikl),

n the outer layer of the skin. Also, a layer that covers the free surface of an epithelial cell.

cuticle, primary,

n 1. the transitory remnants of the enamel organ and oral epithelium covering the enamel of a tooth after eruption.
Synonym: Nasmyth's membrane. 2. is believed to be the last substance formed by ameloblasts, mediating the attachment of ameloblasts to the enamel.

cuticle, secondary,

n 1. the second cuticle formed when the ameloblasts are replaced by the oral epithelium. It then covers the primary cuticle on the enamel and is the only cuticle on the cementum.
2. a keratinized pedicle found between the gingival epithelium and the surface of a tooth.

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cuticle

1. a layer of more or less solid substance covering the free surface of an epithelial cell.

2. the narrow band of epidermis extending from the wall of the nail or claw, onto the surface; called also eponychium.

3. the layer of cells on the surface of a hair shaft or wool fiber. In wool it is the projection of the edge of cuticular plates that gives the fiber its unique felting property.

4. an extremely thin, transparent, proteinaceous covering over the eggshell of bird's eggs. It may contain pigment and is permeable to gases.

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cuticle of koilin

a tough membrane, usually greenish, and a carbohydrate-protein complex, produced by the solidification of the secretion of the tubular glands in the gizzard mucosa of birds; the cuticle protects the mucosa during its crushing operations.