What is the major organ of the integumentary system?

• A. Lungs
• B. Liver
• C. Heart
• D. Skin

Answer: (D)

Verified step by step guidance

1. Step 1: Understand the integumentary system. The integumentary system is responsible for protecting the body from external harm, regulating temperature, and providing sensory information. It includes structures such as skin, hair, nails, and glands.
2. Step 2: Identify the major organ of the integumentary system. The skin is the largest organ in the human body and serves as the primary component of the integumentary system.
3. Step 3: Compare the options provided. The lungs, liver, and heart are part of other systems (respiratory, digestive, and circulatory systems, respectively) and are not related to the integumentary system.
4. Step 4: Confirm the correct answer. Based on the definition and function of the integumentary system, the skin is the major organ associated with this system.
5. Step 5: Reinforce the concept. The skin plays a vital role in protection, sensation, and thermoregulation, making it the central organ of the integumentary system.