Nail Theory

Which part of the nail serves as a watertight seal that protects the matrix against infection?

• eponychium

• lunula

• mantle

• hypoychium

The part of the nail plate that extends beyond the end of the finger is called the:

• sidewall

• free edge

• eponychium

• hyponychium

The living tissue that overlies the nail plate on the sides of the nail is known as the:

• mantle

• eponychium

• lunula

• perionychium

The nail plate rests on which area of the nail?

• sidewall

• free edge

• nail bed

• nail groove

The study of the structure and growth of the nails is called:

• onyx

• etiology

• onychology

• keratinization

A protein substance found in nails, skin and hair is:

• keratin

• cuticle

• lunula

• epithelium

Another term for tinea pedis is:

• athlete's foot

• hangnail

• tinea unguium

• contact dermatitis

A loosening or separation of the nail is referred to as:

• paronychia

• corrugations

• onycholysis

• onychocryptosis

Another name for split of brittle nails is:

• agnails

• onychiphagy

• leukonychia

• onychorrhexis

Another term for bitten nails is:

• onychoptosis

• onychophagy

• onychogryposis

• onychorrhexis