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Questions and Answers

What is the process of laying down new bone material by osteoblasts called?

  • Osteogenesis (correct)
  • Trabeculation
  • Endochondral ossification
  • Intramembranous ossification

Which type of bone tissue is characterized by a haphazard organization of collagen fibers and trabeculae?

  • Spongy bone (correct)
  • Lamellar bone
  • Medullary bone
  • Compact bone

Which part of a long bone is its bulbous end?

  • Epiphysis (correct)
  • Diaphysis
  • Metaphysis
  • Cancellous bone

Which type of ossification involves cartilage as a precursor?

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

What is the primary factor in the bone matrix that makes up 75% of its composition?

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

Where does intramembranous ossification primarily occur?

<p>Skull, mandible, and clavicles (D)</p> Signup and view all the answers

What is woven bone also known as?

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

"Trabecular bone" is a term used interchangeably with which other type of bone tissue?

<p>&quot;Cancellous bone&quot; (C)</p> Signup and view all the answers

What is the direct laying down of bone into primitive connective tissue known as?

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

What is the initial bone tissue formed during fracture healing?

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

Which of the following is a characteristic of woven bone?

<p>Randomly oriented collagen fibers (A)</p> Signup and view all the answers

Which bone disease is associated with the formation of woven bone?

<p>Paget's disease (A)</p> Signup and view all the answers

What is the primary cause of decalcification of bones?

<p>Loss of calcium from bones (C)</p> Signup and view all the answers

Which disorder is characterized by softening of bones due to inadequate calcium or phosphorus?

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

What is the primary cause of rickets in children?

<p>All of the above (D)</p> Signup and view all the answers

Which bone tissue is more severely affected in osteoporosis?

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

What is the primary cause of primary osteoporosis?

<p>Estrogen deficiency in postmenopausal women (A)</p> Signup and view all the answers

Which of the following is a common symptom of osteoporosis?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary function of vitamin D in bone health?

<p>Promoting calcium absorption (C)</p> Signup and view all the answers

What is the main function of primary bone?

<p>To provide temporary structural support before secondary lamellar bone formation (B)</p> Signup and view all the answers

Which of the following is the predominant fiber type in osteoid?

<p>Collagen type I (B)</p> Signup and view all the answers

What is the main difference between woven bone and lamellar bone?

<p>Woven bone has an irregular collagen arrangement, while lamellar bone has a regular arrangement (D)</p> Signup and view all the answers

Which bones are formed through intramembranous ossification?

<p>Flat bones of the skull, mandible, clavicle, and hip bone (A)</p> Signup and view all the answers

What is the initial step in endochondral ossification?

<p>Formation of a hyaline cartilage precursor (B)</p> Signup and view all the answers

What is the function of the epiphyseal plate (growth plate)?

<p>To facilitate bone elongation (A)</p> Signup and view all the answers

What is the first step in the healing process of a bone fracture?

<p>Formation of a hematoma (blood clot) (A)</p> Signup and view all the answers

What is the difference between a closed and an open bone fracture?

<p>A closed fracture does not involve a break in the skin, while an open fracture does (C)</p> Signup and view all the answers

What is the final step in the healing process of a bone fracture?

<p>Remodeling of the bone to restore its normal contour and architecture (A)</p> Signup and view all the answers

What is the main component of the ground substance in osteoid?

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

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