Skin Science Institute Basic Exit Practice Exam 2025 – Your All-in-One Guide to Passing with Confidence!

Question: 1 / 400

Which structure is not part of the integumentary system?

Nails

Hair

Kidneys

The integumentary system comprises various structures that serve to protect the body and contribute to various functions such as sensation, thermoregulation, and the production of substances such as sweat and oils. Key components of the integumentary system include the skin itself, hair, nails, and associated glands such as sebaceous (oil) glands and sweat glands.

The kidneys, however, are part of the urinary system, which is responsible for filtering blood, excreting waste products, and regulating fluid and electrolyte balance in the body. Since the kidneys are not involved in the protective or regulatory functions of the skin and its associated structures, they do not belong to the integumentary system. This understanding clarifies why the correct answer identifies the kidneys as the structure that is not part of the integumentary system.

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Oil glands

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