Integumentary System
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Questions and Answers

What is the primary function of the stratum corneum?

  • Cell division
  • Protection and moisture retention (correct)
  • Nutrient absorption
  • Sensation

    • Which of the following structures is NOT found in thick skin?

  • Stratum lucidum
  • Hair follicles (correct)
  • Sebaceous glands (correct)
  • Sweat glands

    • How many layers of dead cells are typically present in the stratum corneum?

  • 10 layers
  • 30 layers (correct)
  • 50 layers
  • 20 layers

    • What characterizes the papillary layer of the dermis?

    <p>It allows nutrients to reach living cells.</p> Signup and view all the answers

    Which layer is immediately located beneath the epidermis?

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

    What is the cellular composition of the dermis?

    <p>Fibroblasts, fibrocytes, and matrix</p> Signup and view all the answers

    What do dermal papillae do?

    <p>Create fingerprints through epidermal ridges</p> Signup and view all the answers

    Which layer is visible under the microscope in thick skin?

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

    What protects against water loss on the skin's surface?

    <p>Glycolipid secretions</p> Signup and view all the answers

    Which skin structure is defined as a clear layer visible in thick skin?

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

    What is the primary type of tissue that makes up the epidermis?

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

    Which layer of the epidermis is known for its mitotically active cells?

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

    What percentage of cells in the stratum basale are keratinocytes?

    <p>90%</p> Signup and view all the answers

    Which layer of the epidermis contains cells that are too far above the blood supply to maintain life?

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

    What characterizes the stratum lucidum layer?

    <p>It appears as a clear band of flat, dead cells.</p> Signup and view all the answers

    Which of the following layers of skin is typically found in thick skin like the soles of the feet?

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

    In which layer of the epidermis are melanin granules scattered?

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

    What type of cells primarily compose the stratum granulosum?

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

    Which of the following describes the dermis?

    <p>Vascular and contains connective tissue</p> Signup and view all the answers

    What is the most dominant type of cell found in the stratum basale?

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

    What primarily composes sebum produced by sebaceous glands?

    <p>Fats, salts, and proteins</p> Signup and view all the answers

    Which structure within the hair follicle is responsible for supplying nutrients to the growing hair?

    <p>Hair papilla</p> Signup and view all the answers

    What is the primary composition of the reticular layer of the dermis?

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

    What is the primary function of the arrector pili muscle associated with hair follicles?

    <p>Causing hair to stand on end</p> Signup and view all the answers

    Which of the following statements about the hypodermis is correct?

    <p>It lies immediately below the dermis.</p> Signup and view all the answers

    Which gland is primarily responsible for producing ear wax?

    <p>Ceruminous gland</p> Signup and view all the answers

    What causes the pinkish tinge in fair-skinned individuals?

    <p>Hemoglobin in the vascular dermal layer</p> Signup and view all the answers

    What is the role of the nail matrix in nail growth?

    <p>Produces new nail cells</p> Signup and view all the answers

    Which of the following glands is NOT derived from the epidermis?

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

    Which type of cutaneous sense receptor is primarily responsible for detecting temperature changes?

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

    How much of the body's adipose tissue is found in the hypodermis?

    <p>One-half</p> Signup and view all the answers

    What physiological reaction is caused by the contraction of arrector pili muscles?

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

    What function does sweat primarily serve when it evaporates from the skin?

    <p>Cooling the body</p> Signup and view all the answers

    What is the role of melanocytes in the skin?

    <p>Producing melanin</p> Signup and view all the answers

    Which part of the nail is visible and extends beyond the fingertip?

    <p>Free edge</p> Signup and view all the answers

    What role do sudoriferous glands play in the body?

    <p>They cool the body through sweat</p> Signup and view all the answers

    Which layer of the skin is primarily responsible for skin stretching and potential tears?

    <p>Reticular layer of the dermis</p> Signup and view all the answers

    What type of tissue is found in hair follicles that aids in hair production?

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

    Which type of skin structure provides a protective covering and is composed of dead keratinized cells?

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

    What is the primary function of the sebaceous glands?

    <p>Producing oil</p> Signup and view all the answers

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