Skin Theory Flashcards 112.1 - 112.12
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Questions and Answers

What are the functions of the skin?

Regulation of body temperature and protection

Which of the following layers of skin does not contain any blood vessels?

  • Epidermis (correct)
  • Subcutaneous
  • Stratum Granulosum
  • Dermis
  • Where does mitosis (cell division) or replacement of the skin cells take place?

    Stratum Basale

    What determines the color of the skin?

    <p>Melanin</p> Signup and view all the answers

    Where is the Stratum Lucidum layer found?

    <p>Soles of feet and palms of hands</p> Signup and view all the answers

    Which layer of the skin contains collagen protein and elastin fibers?

    <p>Stratum Granulosum</p> Signup and view all the answers

    What gland excretes sweat?

    <p>Sudoriferous</p> Signup and view all the answers

    Where is the greatest concentration of Sudoriferous Glands found?

    <p>Palms, soles, scalp and forehead, and underarms</p> Signup and view all the answers

    What is the function of Sebum?

    <p>Mix with sweat to form the acid mantle</p> Signup and view all the answers

    What causes most skin problems?

    <p>The Sebaceous Glands</p> Signup and view all the answers

    Which layer of skin is located below the Dermal Layer?

    <p>Subcutaneous</p> Signup and view all the answers

    What do nerve bundles in the subcutaneous tissue respond to?

    <p>Pain</p> Signup and view all the answers

    Which ways to protect the skin from the sun's harmful rays are incorrect?

    <p>Apply oil every 2 hours</p> Signup and view all the answers

    Which skin type has a rough texture with blackheads and enlarged pores?

    <p>Oily Skin</p> Signup and view all the answers

    Which skin type is recognized by the shiny T-zone?

    <p>Combination Skin</p> Signup and view all the answers

    What is keratinization?

    <p>Chemical conversion of living cells into dead protein cells</p> Signup and view all the answers

    What is melanin?

    <p>A pigment that gives the skin its color</p> Signup and view all the answers

    What is collagen?

    <p>One of the protein fibers that helps give skin its elastic quality</p> Signup and view all the answers

    What is the epidermis?

    <p>Outermost layer of skin</p> Signup and view all the answers

    What is the dermal layer of skin composed of?

    <p>Alive tissue</p> Signup and view all the answers

    What is the function of the subcutaneous layer?

    <p>Acts as a shock absorber to protect the bones</p> Signup and view all the answers

    What is another name for Sudoriferous Glands?

    <p>Sweat Glands</p> Signup and view all the answers

    What is the most common skin type?

    <p>Combination Skin</p> Signup and view all the answers

    What is the Stratum Corneum?

    <p>Layer of epidermis that is being constantly shed</p> Signup and view all the answers

    What characterizes dry skin?

    <p>Signs such as peeling and flaking</p> Signup and view all the answers

    What are the six basic functions of the skin?

    <p>Sensation, heat regulation, absorption, protection, excretion, secretion</p> Signup and view all the answers

    What are the three main layers of skin?

    <p>Epidermis, Dermal, Subcutaneous</p> Signup and view all the answers

    What is another name for the epidermis?

    <p>Cuticle or scarf layer</p> Signup and view all the answers

    What is the epidermis composed of?

    <p>Both A and B</p> Signup and view all the answers

    What is basic melanin?

    <p>What you are born with</p> Signup and view all the answers

    What is hyperpigmentation?

    <p>Result of external factors</p> Signup and view all the answers

    Where is the Stratum Corneum located?

    <p>Uppermost and toughest layer</p> Signup and view all the answers

    What is the function of the Stratum Corneum?

    <p>Protecting moisture balance and protected by the acid mantle</p> Signup and view all the answers

    What is another name for the Stratum Corneum?

    <p>The horny layer</p> Signup and view all the answers

    What cell type is found in the Stratum Corneum?

    <p>Keratin protein cell(s)</p> Signup and view all the answers

    What does the Stratum Lucidum do?

    <p>Helps reduce friction between the Stratum Corneum and Stratum Granulosum</p> Signup and view all the answers

    What cell type is found in the Stratum Lucidum?

    <p>Squamous cell(s)</p> Signup and view all the answers

    What is Stratum Granulosum?

    <p>Their cells become more regularly shaped, and they look like tiny granules.</p> Signup and view all the answers

    What are grain-like cells?

    <p>Stratum Granulosum</p> Signup and view all the answers

    Study Notes

    Skin Functions and Structure

    • Skin regulates body temperature and provides protection.
    • The epidermis does not contain blood vessels.
    • Mitosis, or skin cell replacement, occurs in the stratum basale.
    • Melanin is the pigment responsible for skin color.

    Skin Layers

    • The stratum lucidum is exclusively found on the soles of feet and palms of hands.
    • Collagen and elastin fibers that offer support and elasticity are in the dermal layer, particularly the stratum granulosum.
    • The subcutaneous layer, below the dermis, consists of adipose (fatty) and loose connective tissue.

    Glands and Secretions

    • Sweat is produced by sudoriferous (sweat) glands, with the highest concentration found on palms, soles, scalp, forehead, and underarms.
    • Sebum, an oil produced by sebaceous glands, combines with sweat to form the acid mantle, crucial for skin barrier function.
    • Most skin problems stem from issues associated with sebaceous glands.

    Skin Types and Conditions

    • Oily skin is characterized by a rough texture with blackheads and enlarged pores.
    • Combination skin features a shiny T-zone with both oily and dry areas.
    • Dry skin can be identified by peeling and flaking.

    Skin Anatomy

    • The skin has six basic functions: sensation, heat regulation, absorption, protection, excretion, and secretion.
    • It consists of three main layers: epidermis, dermis, and subcutaneous.
    • The epidermis is also referred to as the cuticle or scarf layer and contains five distinct layers.

    Epidermis Details

    • The five layers of the epidermis: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale.
    • Keratinocytes and epithelial cells primarily compose the epidermis.
    • Basic melanin is genetically inherited, while hyperpigmentation results from external factors.

    Specific Layer Functions

    • The stratum corneum is the uppermost layer, crucial for maintaining moisture balance and protected by the acid mantle.
    • It is also known as the horny layer and contains keratin protein cells.
    • The stratum lucidum reduces friction between the stratum corneum and stratum granulosum, featuring squamous cells.
    • Cells in the stratum granulosum take on a more regular shape and appear grain-like.

    Additional Notes

    • The stratum corneum is continuously shed, ensuring skin renewal.
    • The subcutaneous layer acts as a shock absorber, protecting underlying bones.

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    Description

    Test your knowledge on skin theory with these flashcards covering key functions and layers of the skin. Each card presents a question that reinforces important concepts such as protection, blood vessels, and cell division. Perfect for studying or review.

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