[Answer] The crescent-shaped marks on fingernails are called what?

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The crescent-shaped marks on fingernails are called what?

• Lunulae:The white semi-circles visible at the bottom of our fingernails, thumb nails, and toenails are appropriately named "Lunulae." The singular form of the word is "lunula." Fingernails and toenails are made of a protein called keratin. This protein is secreted from the nail matrix, a layer of living tissue found at the base of a nail. The crescent moon shaped lunula is the part of this nail matrix that protrudes from under the skin at the base of your fingers and toes. It is more pronounced in some people than in others. It is most visible on the thumb and big toe nails. Source: ScienceFocus.com

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