TED-Ed What are the universal human rights?

The video explores the skin, the body's largest organ, covering its structure, functions, and roles. Skin is part of the integumentary system, consisting of three layers: epidermis, dermis, and hypodermis. It serves as a protective barrier, regulates temperature, and provides sensory input. The epidermis is constantly renewed, while the dermis contains collagen for shock absorption. Skin hosts microorganisms that aid immune defense. It regulates temperature through blood vessels and sweat glands, and hair follicles help conserve heat. Overall, skin is a complex, multifunctional organ.

What is the primary role of the integumentary system?

• To enhance vision

• To regulate blood pressure

• To protect internal organs

• To aid in digestion

Which cells in the epidermis are responsible for detecting invaders?

• Langerhans cells

• Sebaceous cells

• Keratinocytes

• Merkel cells

What is the role of sebaceous glands in the skin?

• To produce sweat

• To secrete an oily substance

• To detect temperature changes

• To form new skin cells

How does the skin help regulate body temperature when it is too warm?

• By constricting blood vessels

• By expanding blood vessels

• By increasing hair growth

• By reducing sweat production

What phenomenon occurs when tiny muscles cause hair to stand upright?

• Goosebumps

• Sweating

• Shivering

• Blushing