Skin Layers
What are the three main layers of the skin?
Which skin cell makes keratin, the protein that helps protect your skin?
Keratinocytes
Which receptor helps you feel pain and temperature?
Free nerve endings
What is the first stage of wound healing?
Inflammation
Which layer of the skin is damaged first during a sunburn?
Epidermis
Which skin layer contains blood vessels, sweat glands, and most sensory receptors?
Dermis
Which skin cell produces melanin, the pigment that gives skin its color?
Melanocytes
Which receptor helps you feel light touch, such as a gentle tap?
Meissner’s corpuscles
What stage of wound healing builds new tissue and blood vessels?
Proliferation
Which skin cells are responsible for producing the pigment that protects against UV light?
Melanocytes
Which layer stores fat and helps keep your body warm?
Hypodermis
Which skin cell is found in the epidermis and produces the protein that makes skin waterproof?
Keratinocytes
Which receptor detects deep pressure and vibration?
Pacinian corpuscles
What is the final stage of wound healing where the scar becomes stronger?
Maturation
What is the body’s natural pigment that helps absorb harmful UV rays?
Melanin
Put these layers in order from outside to inside.
Hypodermis, dermis, Epidermis
Which two skin cells work together to protect your body from the environment and the sun?
Keratinocytes and melanocytes
Which receptor senses stretching of the skin?
Ruffini endings
A surgical cut with neatly stitched edges usually heals by which type of healing?
Primary intention
Besides sunscreen, name one way to protect your skin from UV rays.
Possible answers: Hat, sunglasses, long sleeves, shade, avoiding midday sun
Which skin layer contains keratinocytes and melanocytes?
Epidermis
Why does someone with more melanin usually have more protection from UV rays?
Melanin absorbs and helps protect against UV radiation, reducing damage to skin cells.
Match the receptor with its job:
Which type of wound healing occurs when a wound is left open because the edges cannot be brought together?
Secondary intention
A person spends all day at the beach without sunscreen and gets a painful red sunburn. Which skin layer and which type of skin cell are most affected?
Epidermis and melanocytes (along with keratinocytes, since both are damaged by UV exposure).