Wound Healing

What is the largest organ in the human body?

• Liver

• Brain

• Skin

• Heart

What is the surface area of the skin in adults?

• 10 square feet

• 15 square feet

• 20 square feet

• 25 square feet

What are some functions performed by the skin?

• Sweating

• Feeling heat and cold

• Growing hair

• All of the above

Tags

NGSS.MS-LS1-8

What happens to the newly healed skin after a deep cut or wound?

• It looks the same as the surrounding area

• It regains all its abilities immediately

• It looks different from the surrounding area

• It never fully regains its abilities

Which layer of the skin consists mostly of hardened cells called keratinocytes?

• Epidermis

• Dermis

• Blood vessels

• Nerve endings

What is the first stage of the regenerative process after a wound?

• Inflammation

• Proliferative stage

• Remodeling

• Hemostasis

Tags

NGSS.HS-LS1-4

What is the skin's response during the hemostasis stage?

• Formation of a blood clot

• Expansion of blood vessels

• Production of growth factors

• Deposition of collagen

What happens during the inflammation stage?

• Bleeding is controlled

• Macrophages fight pathogens

• Fibroblast cells enter the wound

• Collagen is rearranged

What is the fibrous protein produced by fibroblast cells in the wound site?

• Fibrin

• Collagen

• Keratinocytes

• Macrophages

What occurs during the proliferative stage?

• Epidermal cells divide to reform the outer layer of skin

• Dermis contracts to close the wound

• Newly deposited collagen is rearranged

• Blood vessels and connections are strengthened

Tags

NGSS.HS-LS1-4