Importance of Calcium and Phosphorus in Different Life Stages
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Questions and Answers

What happens when there are increasing levels of testosterone that encourage considerable calcium salt in the body?

  • Higher bone density
  • Calcification of the growth point leading to growth stoppage after puberty (correct)
  • Increased muscle mass
  • Increased flexibility in the joints
  • Which type of bone cells are responsible for secreting collagen and forming the organic matrix before calcification?

  • Osteoblasts (correct)
  • Osteoclasts
  • Osteocytes
  • Chondrocytes
  • What is the function of osteoclasts in bone tissue?

  • Erode and resorb previously formed bone (correct)
  • Hold bones together
  • Secrete collagen to form the organic matrix
  • Surround themselves with calcified matrix
  • How does calcification impact growth points in bones?

    <p>Causes closure of the growth points</p> Signup and view all the answers

    What effect does aging have on bone density due to increased osteoclast activity?

    <p>Bone becomes brittle</p> Signup and view all the answers

    Which type of joint allows certain body parts to move in two directions?

    <p>Hinge joints</p> Signup and view all the answers

    What type of bones are most bones of the upper and lower limbs classified as?

    <p>Long bones</p> Signup and view all the answers

    Which type of bone is thin and expanded in two dimensions?

    <p>Flat bones</p> Signup and view all the answers

    What is the function of sesamoid bones in the skeletal system?

    <p>Reduce friction or change the course of tendons</p> Signup and view all the answers

    Which part of a long bone is located at either extremity?

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

    Where are axial skeleton bones located in relation to the body?

    <p>On the long axis or midline of the body</p> Signup and view all the answers

    What is the primary function of flat bones in the skeletal system?

    <p>Provide protection to vital organs</p> Signup and view all the answers

    What is the study of bones collectively making up the skeleton called?

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

    Which type of vessels are NOT present in bones?

    <p>Muscular vessels</p> Signup and view all the answers

    What gives hardness and rigidity to bones?

    <p>Calcium and phosphorus salts</p> Signup and view all the answers

    In the formation and maintenance of the skeletal system, which minerals are considered very important?

    <p>Calcium and Phosphorus</p> Signup and view all the answers

    The Ca:P ratio in bone weight is about 2:1. What does this ratio imply?

    <p>There is more calcium than phosphorus in bones.</p> Signup and view all the answers

    Which cells are responsible for bone formation and repair?

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

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