Skin Anatomy Quiz
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Questions and Answers

What is the primary composition of the epidermis?

  • Columnar epithelium
  • Loose connective tissue
  • Simple cuboidal epithelium
  • Keratinized stratified squamous epithelium (correct)
  • Which tissue primarily composes the dermis?

  • Loose adipose tissue
  • Dense irregular connective tissue (correct)
  • Striated muscle tissue
  • Smooth muscle tissue
  • Which of the following structures is NOT found in the dermis?

  • Epidermal layer (correct)
  • Hair follicles
  • Blood vessels
  • Sweat glands
  • What does the hypodermis primarily consist of?

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

    What characteristic is true of the dermis?

    <p>It contains blood vessels and other structures.</p> Signup and view all the answers

    What is the primary function of the stratum corneum in the skin?

    <p>To prevent microbial penetration and dehydration</p> Signup and view all the answers

    Which layer lies immediately beneath the epidermis?

    <p>Papillary layer</p> Signup and view all the answers

    How long does it take for the entire stratum corneum to be replaced?

    <p>4 weeks</p> Signup and view all the answers

    What type of connective tissue predominates in the reticular layer of the dermis?

    <p>Dense irregular connective tissue</p> Signup and view all the answers

    Which structures are contained within the dermis?

    <p>Nerves and lymph vessels</p> Signup and view all the answers

    What is the primary component of the dermis?

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

    What do dermal papillae in the papillary layer do?

    <p>Form finger-like projections into the epidermis</p> Signup and view all the answers

    Which layer is primarily involved in mechanical protection against abrasion?

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

    What function does the arrector pili muscle serve in humans?

    <p>It contracts to make hair stand up and trap air.</p> Signup and view all the answers

    Which type of gland is responsible for thermoregulation through sweat production?

    <p>Eccrine sweat glands</p> Signup and view all the answers

    What is the primary composition of the hair papilla?

    <p>Connective tissue and blood capillaries</p> Signup and view all the answers

    How do matrix cells in the hair follicle contribute to hair formation?

    <p>They divide and push upwards to become keratinized.</p> Signup and view all the answers

    Which is true about eccrine sweat glands?

    <p>They produce hypotonic sweat primarily for thermoregulation.</p> Signup and view all the answers

    What physiological response does the arrector pili muscle trigger?

    <p>It causes hair to stand on end, resulting in goose bumps.</p> Signup and view all the answers

    Where are eccrine sweat glands most abundantly located?

    <p>On the palms, soles, and forehead.</p> Signup and view all the answers

    What primarily stimulates the contraction of the arrector pili muscle?

    <p>Sympathetic nervous system signals</p> Signup and view all the answers

    What is the primary function of trabeculae in spongy bone?

    <p>To form a network that directs stress and reduces weight</p> Signup and view all the answers

    Which of the following correctly describes the composition of bone?

    <p>Bone is made up of 40% organic components and 60% inorganic components</p> Signup and view all the answers

    What role does the endosteum play in the structure of trabecular bone?

    <p>It covers the trabeculae and contains loose connective tissue</p> Signup and view all the answers

    What is hematopoiesis and where does it occur in the bone?

    <p>It refers to the production of red and white blood cells in red marrow spaces</p> Signup and view all the answers

    How do spaces within the trabeculated network affect bones?

    <p>They make bones lighter, enabling easier movement by muscles</p> Signup and view all the answers

    What is the primary function of chondroblasts during endochondral bone formation?

    <p>To form the hyaline cartilage model</p> Signup and view all the answers

    What does the perichondrium surround during endochondral bone formation?

    <p>Hyaline cartilage model</p> Signup and view all the answers

    What process occurs to the chondrocytes in the center of the cartilage model?

    <p>They undergo hypertrophy and programmed death.</p> Signup and view all the answers

    What is formed as a result of mesenchymal cells differentiating into chondroblasts?

    <p>Hyaline cartilage</p> Signup and view all the answers

    How does the cartilage model of the bones grow?

    <p>Through both interstitial and appositional growth</p> Signup and view all the answers

    What forms as a thin collar around the shaft of the cartilage model?

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

    What happens to the cartilage matrix surrounding the hypertrophying chondrocytes?

    <p>It becomes calcified</p> Signup and view all the answers

    What type of cells does the perichondrium contain that contribute to bone formation?

    <p>Mesenchymal cells</p> Signup and view all the answers

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