Layers of Skin: Functions and Features Explained

The video explains the three layers of the skin: epidermis, dermis, and hypodermis. The epidermis is the outer layer, providing a waterproof barrier and containing melanin, which affects skin color and protects against sun rays. The dermis, the second layer, includes hair follicles, sweat glands, and nerve endings, playing a role in sensation and temperature regulation. The hypodermis, or subcutaneous tissue, is composed of fat and connective tissue, providing warmth and protection. Sensory receptors in the skin send signals to the central nervous system, enabling us to feel sensations.

What is the primary function of the epidermis?

• To store fat

• To provide a waterproof barrier

• To regulate body temperature

• To send sensory signals

Which pigment in the epidermis affects skin color?

• Hemoglobin

• Carotene

• Melanin

• Chlorophyll

What role do nerve endings in the dermis play?

• They store fat

• They determine skin color

• They produce sweat

• They send sensory messages to the brain

How do sweat glands help the body?

• By sending sensory signals

• By regulating body temperature

• By storing energy

• By providing a waterproof barrier

What is the main component of the hypodermis?

• Sweat glands

• Nerve endings

• Fat

• Melanin

What is another name for the hypodermis?

• Subcutaneous tissue

• Connective tissue

• Epidermis

• Dermis

What is the primary function of fat in the hypodermis?

• To provide a waterproof barrier

• To insulate the body and protect organs

• To send sensory signals

• To produce sweat

How do sensory receptors in the skin function?

• They produce melanin

• They regulate body temperature

• They send signals to the central nervous system

• They store fat