Skin Layers and Cells Quiz

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Questions and Answers

Which layer of the skin is responsible for producing keratin, a protein that hardens and flattens the cells?

  • Hypodermis
  • Dermis
  • Keratinocytes (correct)
  • Epidermis

Which cells in the skin synthesize melanin, the pigment responsible for skin color?

  • Melanocytes (correct)
  • Merkel cells
  • Langerhans cells
  • Keratinocytes

What is the general term for a wound, injury, or abnormality in the skin?

  • Epidermis
  • Hypodermis
  • Dermis
  • Lesion (correct)

What is a round, swollen area on the skin that is typically seen in allergic reactions called?

<p>Wheal (C)</p> Signup and view all the answers

What is a small, fluid-filled raised spot on the skin called?

<p>Vesicle (D)</p> Signup and view all the answers

Which layer of the skin is responsible for most of the work that the skin does, such as sweating and circulating the blood?

<p>Dermis (C)</p> Signup and view all the answers

What type of cells determine the appropriate adaptive immune response in the skin, such as inflammation or tolerance?

<p>Langerhans cells (D)</p> Signup and view all the answers

What type of cell combines with nerve endings to create a sensory receptor for touch in the skin?

<p>Merkel cells (B)</p> Signup and view all the answers

What is a scraping-away of the skin surface by friction called?

<p>Abrasion (D)</p> Signup and view all the answers

What is a blister that is more than 5mm in diameter called?

<p>Bulla (D)</p> Signup and view all the answers

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Study Notes

Skin Layers and Functions

  • The epidermis is responsible for producing keratin, a protein that hardens and flattens skin cells.
  • The dermis layer performs essential functions such as sweating and blood circulation.

Skin Pigmentation

  • Melanocytes are the cells in the skin that synthesize melanin, which gives skin its color.

Skin Conditions and Reactions

  • The general term for a wound, injury, or abnormality in the skin is known as a lesion.
  • A wheal is a round, swollen area typically seen in allergic reactions.
  • A vesicle is a small, fluid-filled raised spot on the skin.

Immune and Sensory Response

  • Langerhans cells determine the appropriate adaptive immune response in the skin, reacting to factors like inflammation or tolerance.
  • Merkel cells combine with nerve endings to create a sensory receptor responsible for the sense of touch.

Skin Injuries

  • Abrasion refers to a scraping away of the skin surface caused by friction.
  • A blister larger than 5mm in diameter is referred to as a bulla.

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