¿Para qué es la piel?

The video explains how human skin, though seemingly soft, acts as a protective barrier similar to the scales of animals like pangolins. It describes the production of skin cells in the epidermis, their journey to the surface, and their transformation into a protective layer. The skin's barrier effectively prevents bacteria, fungi, and viruses from penetrating, while fats deter microbes. Despite its protective role, the brain is crucial in avoiding larger threats, unlike the physical defenses of animal scales.

What is the primary protein that makes up the scales of both pangolins and human skin?

• Elastin

• Melanin

• Keratin

• Collagen

How does the body ensure that the skin remains a protective barrier?

• By producing new skin cells every week

• By producing new skin cells every year

• By producing new skin cells every day

• By producing new skin cells every month

What happens to skin cells as they approach the surface of the skin?

• They change color

• They multiply rapidly

• They self-destruct and form a hard shield

• They become softer

What is the main function of the outermost layer of the skin?

• To produce vitamin D

• To regulate body temperature

• To act as a barrier against bacteria and viruses

• To store fat

How do fats on the skin's surface contribute to its protective function?

• By making the skin waterproof

• By enhancing skin elasticity

• By preventing microbes from settling

• By providing nutrients to the skin