Which cells of integumentary produce fibrous protein keratin?

• Melanocytes
• Fibroblasts
• Keratinocytes
• Adipocytes

Which layer of the skin is primarily responsible for the production of new skin cells?

• Stratum corneum
• Epidermis

• Stratum granulosum
• Dermis

Which pigment is responsible for the color of the skin?

• Chlorophyll
• Melanin
• Carotene
• Hemoglobin

 What is the thickest layer of the skin?

• Dermis
• Stratum corneum
• Hypodermis
• Epidermis

 Which layer of the skin contains blood vessels, nerves, and hair follicles?

• Dermis
• Subcutaneous layer
• Epidermis
• Hypodermis

What is the name of the protein that provides strength and waterproofing to the skin?

• collagen
• keratin
• elastin
• melanin

What is the name of the oily substance produced by sebaceous glands?

• Cholesterol
• Keratin
• Collagen
• Sebum

What type of burns affect both the epidermis and dermis, often resulting in blisters?

• Third-degree burns
• Second-degree burns
• Chemical burns
• First-degree burns

Which of the following is not a component of the integumentary system?

• Hair
• Bones
• Nails
• Skin

Which vitamin is synthesized by the skin when exposed to sunlight?

• Vitamin A
• Vitamin C
• Vitamin E
• Vitamin D