Histology And Integumentary System Practice Test

What are the primary functions of nails?

Protection and fine manipulation Temperature regulation Hormone production Sensory perception

Correct Answer:

Protection and fine manipulation

Explanation:

Nails are primarily there to shield the fingertip and enable precise manipulation. The hard nail plate covers the sensitive distal phalanx, protecting soft tissue from minor injuries and providing a rigid surface that acts like a tiny lever. This lever-like property helps with fine tasks that require a precise grip, such as picking up small objects, scratching, or applying controlled force to a surface. In short, nails enhance protection and dexterity at the fingertip. Other options don’t fit because temperature regulation is accomplished by the skin and circulatory or sweat mechanisms, hormone production occurs in endocrine glands, and sensory perception comes mainly from nerve endings in the skin rather than from the nail plate itself.

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