The Integumentary System

The video provides an in-depth look at the integumentary system, covering its components such as skin, hair, nails, and glands. It explains the structure and function of the skin, detailing the epidermis and dermis layers, and discusses the role of melanocytes in skin color. The video also explores the structure and function of hair and nails, and describes the different types of glands, including sweat and sebaceous glands, highlighting their roles in protection and regulation.

What is the primary function of the integumentary system?

• To facilitate movement

• To protect internal organs

• To produce energy

• To support the body's weight

Which layer of the skin is avascular?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous layer

What is the main role of keratinocytes in the epidermis?

• To produce melanin

• To act as sensory receptors

• To divide and form new skin cells

• To ingest foreign substances

Which layer of the epidermis is known for its 'prickly' appearance?

• Stratum corneum

• Stratum basale

• Stratum spinosum

• Stratum granulosum

What is the primary function of the dermal papillae?

• To produce sweat

• To enhance grip

• To store fat

• To secrete oil

What type of keratin is found in hair?

• Intermediate keratin

• Hard keratin

• Flexible keratin

• Soft keratin

What is the function of the arrector pili muscle?

• To cause goosebumps

• To secrete oil

• To grow hair

• To produce sweat

What is the main component of nails?

• Soft keratin

• Elastin

• Hard keratin

• Collagen

Which type of sweat gland is responsible for body odor?

• Eccrine glands

• Apocrine glands

• Sebaceous glands

• Ceruminous glands

What is the primary function of sebaceous glands?

• To store fat

• To secrete oil

• To produce melanin

• To produce sweat