Anatomy and Physiology: Periosteum and Endosteum Composition

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Questions and Answers

What is the function of the periosteum in bones?

  • Provides a smooth surface for joint movement
  • Supports the bone structurally
  • Acts as a source of bone-forming cells (correct)
  • Helps in blood cell formation

Which part of the bone is covered by the periosteum?

  • Exterior except articular cartilage (correct)
  • Interior including the Haversian canals
  • Articular cartilage
  • Endosteum

Where are osteocytes located within the bone structure?

  • On the surface of the bones
  • Within lacunae in the bone matrix (correct)
  • Within the Haversian canals
  • In the periosteum

What is the role of the endosteum in bones?

<p>Lines all internal cavities of bones (C)</p> Signup and view all the answers

Which component is mainly found in the outer fibrous layer of the periosteum?

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

What is a primary function of osteoclasts in bone remodeling?

<p>Maintaining bone resorption (C)</p> Signup and view all the answers

What is the primary function of osteoblasts in bone formation?

<p>Produce bone matrix osteoid (B)</p> Signup and view all the answers

What type of cells line the surfaces of a developing bone as a continuous layer surrounding the bone marrow?

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

Which structure originated from when osteoblasts become trapped in the matrix they secreted?

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

What is the function of Haversian canals in bone structure?

<p>Provide channels for blood vessels and nerves (A)</p> Signup and view all the answers

Which component of bones is responsible for maintaining a local concentration of calcium and phosphate ions?

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

What do osteoblasts primarily produce during bone formation?

<p>Bone matrix osteoid (D)</p> Signup and view all the answers

What is the function of osteoclasts in the microstructure of bone?

<p>Maintain calcium balance between bone &amp; blood (B)</p> Signup and view all the answers

How is the microstructure of spongy bone characterized?

<p>Trabeculae filled with red bone marrow (D)</p> Signup and view all the answers

Where are all osteocytes located in relation to their source of nutrition?

<p>Close to the source of nutrition (D)</p> Signup and view all the answers

Which component is responsible for the organized formation seen in normal bone?

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

What is the role of endosteum in bone structure?

<p>Line the inner surface of bones (D)</p> Signup and view all the answers

In what way does osteoporosis develop according to the text?

<p>Resorption surpasses formation by osteoclasts (A)</p> Signup and view all the answers

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