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Which system influences the sebaceous glands?

  1. Circulatory system

  2. Endocrine system

  3. Nervous system

  4. Lymphatic system

The correct answer is: Endocrine system

The endocrine system is responsible for regulating the sebaceous glands, which produce oils that moisturize and protect the skin. The circulatory system plays a role in delivering nutrients and oxygen to the glands, but it does not directly influence their function. The nervous system controls the glands through nerve signals, but it is not the main regulatory system. The lymphatic system filters toxins from the body, but it does not have a direct impact on the sebaceous glands. Therefore, the endocrine system is the most correct answer.