It is a protein substance that forms the base of all h0rny tissue.
A. Keratin B. Protein C.

Melanin D. Melanocytes
It is the study of nail.
A. Cosmetology B.Dermatology C. Onychology D. Sociology

It is an end portion of the nail plate which extends beyond the fingertip.
A. Free edge B. Hyponychium C. Lunula D. Mantle

A condition in which white spots appear on the nails but do not indicate disease.
A. Koilonychia B. Leukonychia C. Onychauxis D. Paronychia

These are condition caused by injury to the nails, diseases, or imbalances in the body.
A. Nail Condition B. Nail Disease C. Nail Disorder D. Nail Problem ​