Which system includes the skin, hair, and nails?

Which system includes the skin, hair, and nails?

• A. Integumentary
• B. Nervous
• C. Endocrine
• D. Circulatory

Answer: (A)

The main idea is identifying the body system that covers and protects the body and includes its external structures. Skin, hair, and nails are all part of the integumentary system, which encompasses the skin itself and its appendages such as hair and nails, along with glands associated with the skin. This system protects against environmental hazards, helps regulate temperature, provides sensory information, and participates in vitamin D production. The nervous system involves the brain, spinal cord, and nerves; the endocrine system consists of hormone-secreting glands; the circulatory system includes the heart and blood vessels. These other systems don’t focus on skin, hair, and nails, so the integumentary system is the correct fit.

The main idea is identifying the body system that covers and protects the body and includes its external structures. Skin, hair, and nails are all part of the integumentary system, which encompasses the skin itself and its appendages such as hair and nails, along with glands associated with the skin. This system protects against environmental hazards, helps regulate temperature, provides sensory information, and participates in vitamin D production. The nervous system involves the brain, spinal cord, and nerves; the endocrine system consists of hormone-secreting glands; the circulatory system includes the heart and blood vessels. These other systems don’t focus on skin, hair, and nails, so the integumentary system is the correct fit.