Which body system provides protection, regulates body temperature, and controls sebaceous and sudoriferous glands?

• A. Nervous System
• B. Integumentary System
• C. Respiratory System
• D. Digestive System

Answer: (B)

The integumentary system, which includes the skin, along with its appendages, provides protection, helps regulate body temperature, and controls sebaceous and sweat glands. The skin forms a physical barrier against dirt, microbes, and injury. It also helps regulate temperature through sweat production and the dilation or constriction of surface blood vessels—sweat evaporates to cool the body, and changing blood flow releases or conserves heat. Sebaceous glands produce sebum to keep the skin and hair moisturized and protected, while sweat glands actively release moisture for cooling and waste removal. Together, these features cover all three aspects described, making this system the best fit.