Skeletal System
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Questions and Answers

What happens to the epiphyseal plate as growth in the bone is halted?

  • It narrows and finally disappears (correct)
  • It transforms into a different type of tissue
  • It widens and becomes more prominent
  • It remains the same throughout life

    • What is the primary purpose of bone remodelling?

  • To replace old bone with new bone
  • To regulate blood calcium levels (correct)
  • To repair fractures
  • To increase bone strength in areas of physical stress

    • What is the term for a fracture where the skin is pierced?

  • Compound fracture (correct)
  • Simple fracture
  • Comminuted fracture
  • Greenstick fracture

    • What is the first stage of bone healing?

    <p>Haematoma formation</p> Signup and view all the answers

    What type of fracture occurs when the bone is broken into multiple pieces?

    <p>Comminuted fracture</p> Signup and view all the answers

    What is the primary function of the osteoid component in bone structure?

    <p>Offers flexibility and support to the bone</p> Signup and view all the answers

    What is the role of osteoblasts in bone formation?

    <p>To produce and secrete osteoid and deposit minerals</p> Signup and view all the answers

    What is the main function of the skeletal system?

    <p>To provide structural support and protection to internal organs</p> Signup and view all the answers

    What is the name of the hardened matrix in bone structure?

    <p>Hydroxyapatite</p> Signup and view all the answers

    Where are osteogenic stem cells typically found?

    <p>In the periostem and endosteum</p> Signup and view all the answers

    What is the approximate percentage of osteoblasts in bone mass?

    <p>2%</p> Signup and view all the answers

    What is the function of osteoclasts in bone remodeling?

    <p>To remove mineral from the matrix</p> Signup and view all the answers

    What is the main function of compact bone?

    <p>To provide strength for weight bearing</p> Signup and view all the answers

    What is the characteristic of cancellous bone?

    <p>It is light and has a haphazard arrangement of trabeculae</p> Signup and view all the answers

    What is the function of red bone marrow?

    <p>To produce blood cells</p> Signup and view all the answers

    What is the classification of bones based on shape?

    <p>Flat, long, short, and irregular bones</p> Signup and view all the answers

    What is the process of bone formation called?

    <p>Osteogenesis</p> Signup and view all the answers

    What is the primary function of osteoclasts in endochondral ossification?

    <p>To erode the centre of the diaphysis and create a marrow cavity</p> Signup and view all the answers

    What happens to the epiphyseal plate at the end of puberty?

    <p>It becomes inactive and disappears</p> Signup and view all the answers

    In which type of ossification does a cartilage model lay down first?

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

    What is the outcome of the remodelling process in intramembranous ossification?

    <p>Compact bone develops from cancellous bone</p> Signup and view all the answers

    What is the role of mesenchymal cells in intramembranous ossification?

    <p>They secrete the organic component of bone</p> Signup and view all the answers

    What stimulates bone growth during puberty?

    <p>Increased levels of sex, growth, and thyroid hormones</p> Signup and view all the answers

    What type of joint is characterized by a thin layer of dense irregular connective tissue uniting the bones of the skull?

    <p>Suture</p> Signup and view all the answers

    What is the term for bones united by a ligament or a sheet of dense irregular connective tissue?

    <p>Syndesmosis</p> Signup and view all the answers

    What is the term for bones united by hyaline or fibrocartilage?

    <p>Cartilaginous joint</p> Signup and view all the answers

    What is the term for an immovable joint?

    <p>Synarthrosis</p> Signup and view all the answers

    What is the term for a slightly movable joint?

    <p>Amphiarthrosis</p> Signup and view all the answers

    What is the characteristic feature of all synovial joints?

    <p>Presence of a fibrous capsule</p> Signup and view all the answers

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