Integumentary System mini quiz

What is the largest organ of the human body?

• Lungs

• Heart

• Liver

• Skin

Which layer of skin is responsible for the synthesis of vitamin D?

• Epidermis

• Not specified

• Dermis

• Hypodermis

How often does the epidermis completely replace itself?

• Every 10-12 weeks

• Every 2-3 weeks

• Every 4-6 weeks

• Every 7-9 weeks

What is the role of keratinocytes?

• Protecting against UV radiation

• Regulating body temperature

• Forming keratin

• Producing melanin

What is the primary function of melanocytes?

• Producing sweat

• Protecting against UV radiation

• Synthesizing melanin

• Regenerating skin cells

What differentiates 'thick skin' from 'thin skin'?

• Number of epidermal layers

• Density of nerve endings

• Presence of hair follicles

• Amount of melanin produced

Which layer of skin is avascular?

• Hypodermis

• Dermis

• Epidermis

• Stratum basale

Why is it important to wear sunscreen?

• To enhance vitamin D synthesis

• To maintain skin elasticity

• To protect against UV radiation damage

• To prevent skin dehydration

Which layer of the skin contains most of the body's fat?

• Stratum corneum

• Hypodermis

• Dermis

• Epidermis

What is the main purpose of the dermal papillae?

• To help grip surfaces

• To store fat

• To synthesize vitamin D

• To produce sweat