The Fold of Stratum Corneum Over the Base of a Nail

question 89

Multiple Choice

The fold of stratum corneum over the base of a nail is called the

• A) body.
• B) bed.
• C) root.
• D) cuticle.
• E) free edge.

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Definitions:

Teratogens

Agents or factors that can cause the development of physical defects in an embryo or fetus during pregnancy.

Birth Defects

Birth defects are physical or biochemical abnormalities present at birth that can result in physical, mental, or emotional disability or dysfunction.

Mutations

Changes in the DNA sequence of a cell's genome, which can lead to variations in the traits of an organism, and are a primary source of genetic diversity.

Threshold Dose-Response

A concept in toxicology that indicates the lowest dose at which a particular response or effect is observed in an organism or system.