The protective, waterproof outer layer of skin is formed by the tough skeleton of intermediate filaments that persist after the surface skin cells die.

Question

Quizplus · Accepted Answer

The statement is true. The outer layer of skin, also known as the epidermis, is formed by a tough network of intermediate filaments made of keratin that provides protection and waterproofing, preventing the loss of essential fluids from the body. These filaments persist even after the upper layer of skin cells (the stratum corneum) dies and sloughs off.

The Protective, Waterproof Outer Layer of Skin Is Formed by the Tough