Biology: Keratin and Skin Structures Quiz
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Questions and Answers

What type of skin condition is caused by bacterial infection of hair follicles and sebaceous glands?

  • Boils and carbuncles (correct)
  • Cold sores
  • Contact dermatitis
  • Athlete's foot
  • Which degree of burn involves damage to the epidermis and upper dermis, with blisters forming?

  • Third degree burn
  • First degree burn
  • None of these
  • Second degree burn (correct)
  • Why are facial burns considered critical burns?

  • Scar tissue can limit mobility
  • Can cause swelling and suffocation (correct)
  • Third degree burn
  • None of the above
  • Which is the most common type of skin cancer?

    <p>Basal cell carcinoma</p> Signup and view all the answers

    What is the chronic disorder that causes depigmentation patches in the skin?

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

    Which structure detects touch sensations?

    <p>Free nerve endings</p> Signup and view all the answers

    Which layer of the skin is composed of adipose tissue or fats?

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

    What are deep pressure receptors in the skin?

    <p>Pacinian corpuscle</p> Signup and view all the answers

    What is the redness of the skin due to fever, allergic reactions, and infections called?

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

    Which of these statements about keratin is correct?

    <p>Keratin is a protein that helps form hair, nails, and skin.</p> Signup and view all the answers

    Which cell type plays a role in immunity and disease resistance in the epidermis?

    <p>Intraepidermal macrophages</p> Signup and view all the answers

    Which structures in the skin help prevent water loss and inhibit bacterial growth?

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

    Which term refers to the subcutaneous layer of the skin?

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

    Which layer of the epidermis is composed of a keratinized stratified squamous epithelium?

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

    Which pigment in the skin is capable of absorbing ultraviolet light?

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

    Which layer of the epidermis contains cells undergoing mitosis?

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

    Which statement about the stratum lucidum is correct?

    <p>It is present only in thick skin.</p> Signup and view all the answers

    Which type of gland is connected to a hair follicle and helps lubricate the hair and skin?

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

    Which layer of the skin is composed mainly of dense irregular connective tissue containing collagen and elastic fibres?

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

    What is the inherited inability to produce melanin called?

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

    Which of the following is NOT a characteristic of thick skin?

    <p>All of these choices are correct</p> Signup and view all the answers

    Which skin structure plays an important role in thermoregulation?

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

    What are scale-like modifications of the epidermis?

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

    Which type of gland is connected to a hair follicle?

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

    What refers to the paleness of the skin, as seen in patients with shock or anemia?

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

    Which of the following is NOT a homeostatic contribution of the skin?

    <p>Help activate vitamin B</p> Signup and view all the answers

    What causes "goose bumps"?

    <p>Action of arrector pili muscles</p> Signup and view all the answers

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