Skin Histology and Physiology

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Questions and Answers

What is the main component of the integument?

  • Dermis
  • Blood vessels
  • Subcutaneous tissue
  • Epidermis (correct)

Which of the following is NOT a function of the skin?

  • Excretion of glucose (correct)
  • Synthesis of vitamin D
  • Protection against injury
  • Regulation of body temperature

Which of the following is NOT considered a skin appendage?

  • Sebaceous glands
  • Sweat glands
  • Blood vessels (correct)
  • Hair follicles

What is the approximate weight of the integument in a person weighing 70 kg?

<p>4.0 kg (D)</p> Signup and view all the answers

Which structure covers the external surface of the tympanic membrane?

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

What determines the color of the skin?

<p>Vascularization and pigmentation (B)</p> Signup and view all the answers

Which layer of the skin contains cells that are mitotically active and cuboidal to low columnar in shape?

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

In which type of skin is the stratum lucidum present?

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

Which type of skin lacks hair follicles, arrector pili muscles, and sebaceous glands?

<p>Thick skin (C)</p> Signup and view all the answers

What is the main component of the epidermis, composing of keratinocytes, melanocytes, Langerhans cells, and Merkel cells?

<p>Stratified squamous epithelium (D)</p> Signup and view all the answers

Which layer of the epidermis consists of several layers of flat cornified, keratinized dead cells with a thickened cell membrane?

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

What is the thickness range of the epidermis in thin skin?

<p>$75-150$ µm (A)</p> Signup and view all the answers

Which cell type in the epidermis is responsible for detecting light touch and superficial pressure?

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

What is the main function of the stratum granulosum in the epidermis?

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

Which layer of the epidermis is most superficial but still contains cells with nuclei?

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

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