The organ system that performs a similar function to a cell membrane is the integumentary system. Just like the cell membrane, which protects the cell from its external environment, the integumentary system, which includes the skin, hair, nails, and associated glands, protects the body from external threats such as pathogens, UV radiation, and physical injuries. Additionally, the integumentary system helps regulate body temperature and prevents water loss, much like how the cell membrane regulates the movement of substances in and out of the cell.
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