Which two systems nourish the skin?

• A. Blood and lymph
• B. Nerves and blood vessels
• C. Lymph and nerve endings
• D. Fat and blood

Answer: (A)

The skin is nourished primarily by the blood and lymphatic systems. Blood vessels play a crucial role in delivering essential nutrients and oxygen to the skin, which are vital for its health and maintenance. The blood also aids in removing waste products from the skin cells, thus helping maintain a balanced environment for cellular functions.

The lymphatic system complements this by draining excess interstitial fluid and waste products while also transporting immune cells that help protect the skin from infections. This dual nourishment from both the blood and lymph ensures that the skin receives the necessary elements to remain healthy and perform its protective functions effectively.

While the other options mention systems related to the skin, they do not encompass the primary means through which the skin is nourished. Nerves are crucial for sensation and signaling, but they do not provide nourishment. Fat contributes to the skin’s structure and insulation but does not directly nourish it in the way that blood and lymph do.