Nails

Onychodermal band

In conjunction with the hyponychium, this forms a protective seal that protects the nail bed.

Constantly

Nails are ________ growing for your entire life.

Free edge

The ____ ______ of the nail is the white part that extends over the finger.

Lunula, cuticle, free edge, deformed

The _____ is a crescent shaped white section of the nail matrix. It is sometimes visible close to the _____. Its main function is in shaping the ____ _____ of the nail. Thus, if it is damaged, the nail is permanently ______.

Cuticle

The ______ is a thin, semicircular layer of dead skin cells produced by the eponychium.

Hyponychium

The ______ is the area o of epithelium underlying the free edge of the nail plate. It is the portion of the nail where the nail bed ends.

Perionyx

The ______ is the edge of the eponychium that projects onto the nail bed, covering a tiny bit of the lunula.

Paronychium, lateral nail fold

The _______ (aka, the ________ ____ ____) is the part of skin that folds under and around the sides of nails to prevent debris from getting under the nail. The edges of the nail are held in place by this.

Eponychium, proximal nail fold

The _______ (the very end of the _______ ________ ________) is a little fold of skin that produces the cuticle. It is a small band around the edge of the base of the nail. It protects the are between the nail and finger epidermis from bacterial infection.

Eponychium

The ________ forms a protective seal with the cuticle.

Plate, beta, beta pleated sheets, bone

The nail ____ is made of keratinized cells (specifically _____ keratin which is in ______ ______ ______ and is thus rigid and hard). The arch of the nail is shaped by the underlying _____.

Bed

The nail ____ is the skin beneath the nail plate, containing two layers of skin like all skin. It gives rise to most of the nail and nail bed volume.

Body

The nail ____ is the visible part of the nail attached to the underlying nail bed.

Matrix, distally

The nail _____ is composed of lymph, blood vessels and nerves. The size, length, and thickness of this determine the width and thickness of the nail bed. New cells push older cells _______ from the matrix.

Root

The nail _____ is the part of the nail plate covered by skin. It extends distally from the matrix.

Sinus

The nail ______ is the location of the nail root. It originates from actively multiplying cells from the underlying matrix.

Groove

The nail _______ is a shallow depression between the nail bed and the nail wall.

Perionychium

This is a term for the term for the nail bed, hyponychium, paronychium, and eponychium all together (basically all the tissue bordering the root and sides of the nail).

Onychodermal band

This is the seal between the hyponychium and the nail plate.

Capillaries

When old cells are pushed out by new cells, they get compressed, flat, and translucent, so the ______ of the nail bed become visible, making nails appear pink.

Nails

_______ function in defense, protection, and enhance sensory perception.