The Skin

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Questions and Answers

Which of the following is the largest organ of the body by weight and volume?

  • Skin (correct)
  • Lungs
  • Heart
  • Liver

What are the functions of the skin?

  • Protection, thermoregulation, and prevention of dehydration (correct)
  • Digestion, respiration, and excretion
  • Sight, hearing, and taste
  • Coordination, balance, and movement

What is the main function of the integument?

  • To provide oxygen to the body
  • To protect internal tissues (correct)
  • To regulate body temperature
  • To produce blood cells

What are the two distinct regions of the dermis?

<p>Papillary dermis and reticular dermis (B)</p> Signup and view all the answers

Which of the following is not an accessory structure of the dermis?

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

What is the function of Langerhans cells in the epidermis?

<p>Immune response (B)</p> Signup and view all the answers

Which layer of the epidermis is responsible for the production of melanin?

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

What is the function of sebaceous glands in the skin?

<p>Production of oil (D)</p> Signup and view all the answers

Which of the following is not a sensation monitored by the skin?

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

What is the main function of the epidermis?

<p>To serve as a barrier (B)</p> Signup and view all the answers

Which type of glands are typically associated with hair follicles and secrete sebum into a hair follicle?

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

What is the function of arrector pili muscles?

<p>Stand the hair up in response to cold or fear (B)</p> Signup and view all the answers

Where are eccrine sweat glands found?

<p>Both thick and thin skin (A)</p> Signup and view all the answers

Which cells help push secretory products into and along the lumen?

<p>Myoepithelial cells (C)</p> Signup and view all the answers

Which type of sweat glands have larger lumens compared to eccrine sweat glands?

<p>Apocrine sweat glands (B)</p> Signup and view all the answers

What is the name of the structure formed at the basal region of the hair follicle?

<p>Hair bulb (B)</p> Signup and view all the answers

Which part of the hair follicle contains capillaries and nerve fibers that supply the hair follicle?

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

What is the outermost layer of the hair shaft called?

<p>Hair cuticle (B)</p> Signup and view all the answers

Where is the eponychium located?

<p>Junction zone between skin of the finger and nail plate (C)</p> Signup and view all the answers

What is the function of the perionychium?

<p>Protect the nail plate (B)</p> Signup and view all the answers

Which layer of the epidermis is composed of flattened cells with keratohyalin granules in their cytoplasm?

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

Which layer of the epidermis contains numerous flattened cells that are filled with keratin and lack organelles and nuclei?

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

Which layer of the epidermis is the deepest and composed of a single layer of cuboidal cells, including stem cells?

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

Which layer of the epidermis is typically the thickest and consists of interconnected cells with numerous desmosomes?

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

Which layer of the epidermis is responsible for producing melanin?

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

Which layer of the epidermis contains sensory receptor cells that respond to light touch stimuli and for sensing an object's texture?

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

Which layer of the skin is composed of loose connective tissue and is located deep to the epidermis?

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

Which layer of the skin is responsible for preventing water loss and the entry of pathogens?

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

Which layer of the skin is located deep to the dermis and contains loose connective tissue, adipose tissue, nerves, and arteries?

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

What is the function of Meissner corpuscles in the skin?

<p>Responsible for discriminative touch (D)</p> Signup and view all the answers

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