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

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

<p>Vitiligo (A)</p> Signup and view all the answers

Which structure detects touch sensations?

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

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

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

What are deep pressure receptors in the skin?

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

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

<p>Erythema (B)</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. (A)</p> Signup and view all the answers

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

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

Which term refers to the subcutaneous layer of the skin?

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

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

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

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

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

Which layer of the epidermis contains cells undergoing mitosis?

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

Which statement about the stratum lucidum is correct?

<p>It is present only in thick skin. (D)</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 (C)</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 (B)</p> Signup and view all the answers

What is the inherited inability to produce melanin called?

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

Which skin structure plays an important role in thermoregulation?

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

What are scale-like modifications of the epidermis?

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

Which type of gland is connected to a hair follicle?

<p>Sebaceous gland (A)</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 (B)</p> Signup and view all the answers

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

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

What causes "goose bumps"?

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

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