Integumentary System Functions

What cell produces the pigment melanin?

• Keratinocytes
• Melanocytes
• Merkel (Tactile) Cells
• Langerhans (dendritic) cell

What cell detects touch and sensory sensations?

• Keratinocytes
• Melanocytes
• Merkel (Tactile) Cells
• Langerhans (Dendritic) cell

What cell produces keratin, which allows for waterproofing of the skin, nails, and hair?

• Keratinocytes
• Melanocytes
• Merkel (Tactile) Cells
• Langerhans (Dendritic) cell

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What cell detects produces an immune response against pathogens entering the skin?

• Keratinocytes
• Melanocytes
• Merkel (Tactile) Cells
• Langerhans (Dendritic) cell

what causes skin cancer?

• nothing
• UV rays 
• Radiation
• Smoking

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Why do you turn red when you are hot?

• The blood vessels in your skin constrict, reducing blood flow to cool the body
• The blood vessels constrict to increase blood flow to cool the body
• The blood vessels dilate to increase blood flow to the skin
• The blood vessels dilate to decrease blood flow to the skin

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A major function of skin is protection from:

• Abrasion
• UV light 
• Entry of microorganisms
• All of the above 

The waterproofing protein that fills the cells in the upper layers of the epidermis.

• Keratin
• Melatonin
• Melanin
• Actin

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Nails are made out of what?

• All of the Above 
• Terminal 
•  Vellus 
  
• Keratin 

In which of these layers are melanocytes found?

• Dermis
• Hypodermis
• Stratum basale
• Epidermis