Which organ functions as a sensory organ that detects touch, temperature, and pain?

• A. Eyes
• B. Ears
• C. Nose
• D. Skin

Answer: (D)

The skin acts as the body’s main sensory organ for touch, temperature, and pain because it contains a variety of specialized receptors in the dermis and epidermis. Mechanoreceptors respond to light touch, pressure, and vibration; thermoreceptors detect heat and cold; nociceptors warn of painful or potentially damaging stimuli. These signals travel through peripheral nerves to the brain, where they are interpreted as touch, warmth or coolness, and pain. Other options serve different senses—eyes detect light, ears handle sound and balance, and the nose detects smells—so the skin is uniquely positioned to sense these basic external cues across a broad surface.