Skeletal System Functions Quiz
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Questions and Answers

Which function of the skeletal system includes the production of blood cells?

  • Support
  • Protection
  • Movement
  • Manufacturing (correct)

    • What is the primary role of the medullary cavity in long bones?

  • Support weight of the body
  • Storage of calcium deposits
  • Providing smooth movement at joints
  • Production of red blood cells (correct)

    • Which anatomical feature of a long bone is responsible for growth in length?

  • Articular cartilage
  • Diaphysis
  • Epiphyses
  • Epiphyseal plate (correct)

    • Which of the following is NOT a function of the skeletal system?

    <p>Facilitation of nerve transmission</p> Signup and view all the answers

    How are bones primarily classified in terms of their structure?

    <p>By shape</p> Signup and view all the answers

    Where is spongy bone primarily located within long bones?

    <p>At the ends of the long bones</p> Signup and view all the answers

    What structural arrangement characterizes compact bone?

    <p>Cylinders known as osteons</p> Signup and view all the answers

    Which type of bone cell is responsible for producing new bone?

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

    What features are found in spongy bone that aid in its function?

    <p>Large spaces filled with marrow and blood vessels</p> Signup and view all the answers

    What is the purpose of canaliculi in bone tissue?

    <p>To allow bone cells to communicate with each other</p> Signup and view all the answers

    What is the function of the periosteum in a long bone?

    <p>To cover the outer surface of the bone</p> Signup and view all the answers

    Which part of a long bone contains yellow bone marrow?

    <p>Medullary cavity</p> Signup and view all the answers

    What is found at the ends of long bones to aid in joint movement?

    <p>Articular cartilage</p> Signup and view all the answers

    Which term describes the shaft of a long bone?

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

    What is the inner layer of a long bone that has a porous structure?

    <p>Spongy bone</p> Signup and view all the answers

    What is the primary role of osteoid in bone composition?

    <p>Offers flexibility and tensile strength</p> Signup and view all the answers

    Which hormone is responsible for stimulating osteoclasts to break down bone?

    <p>Parathyroid hormone</p> Signup and view all the answers

    During the bone repair process, which phase follows the formation of a hematoma?

    <p>Formation of a callus</p> Signup and view all the answers

    What is the consequence of a lack of hydroxyapatite in bone composition?

    <p>Development of rickets</p> Signup and view all the answers

    What is the main function of calcitonin in bone remodeling?

    <p>Stimulates adding calcium to bones from the bloodstream</p> Signup and view all the answers

    Which bone is not part of the axial skeleton?

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

    How many vertebrae are present in the vertebral column at birth?

    <p>33</p> Signup and view all the answers

    What is the primary purpose of the intervertebral discs?

    <p>Cushion and absorb shock</p> Signup and view all the answers

    Which of the following is a characteristic of the lumbar vertebrae?

    <p>They help support the lower back</p> Signup and view all the answers

    What is the shape of the vertebral column at birth?

    <p>Convexly curved</p> Signup and view all the answers

    Which bone is NOT part of the skull?

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

    Which of the following bones is associated with the lower body?

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

    What is the function of the pelvis in the human skeleton?

    <p>Connect the spine to the lower limbs</p> Signup and view all the answers

    How many types of phalanges are present in the human body?

    <p>28</p> Signup and view all the answers

    Which bone is referred to as the kneecap?

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

    What role does parathyroid hormone (PTH) play in calcium balance?

    <p>Raises blood calcium levels</p> Signup and view all the answers

    Which hormone is responsible for lowering blood calcium levels?

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

    What is the primary function of osteoblasts in bone physiology?

    <p>Build bone tissue</p> Signup and view all the answers

    How is calcium stored in the body when levels are excessive?

    <p>In bones and teeth</p> Signup and view all the answers

    When blood calcium levels are low, what process is activated?

    <p>PTH is released from parathyroid glands</p> Signup and view all the answers

    Which statement regarding bones is accurate?

    <p>Bones are constantly remodeled</p> Signup and view all the answers

    What effect does calcitonin have on osteoclast activity?

    <p>Inhibits osteoclast activity</p> Signup and view all the answers

    What happens to blood calcium levels when osteoclasts are more active than osteoblasts?

    <p>Levels increase</p> Signup and view all the answers

    Which bone is located at the front of the skull?

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

    What is the name of the bone that forms the lower part of the skull and houses the lower teeth?

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

    Which of the following bones is part of the lateral aspect of the skull?

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

    Which of the following bones is located between the forehead and the eyes?

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

    Which of the following bones is NOT part of the appendicular skeleton?

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

    What type of joint allows for the greatest range of motion?

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

    Which structure provides lubrication in synovial joints?

    <p>Synovial fluid</p> Signup and view all the answers

    Which of the following is an example of a pivot joint?

    <p>Neck (atlantoaxial joint)</p> Signup and view all the answers

    What connects muscles to bones in the appendicular skeleton?

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

    Where is the scapula located in the skeleton?

    <p>On the upper back portion of the skeleton</p> Signup and view all the answers

    Which bone is directly situated below the lumbar vertebrae?

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

    What is the position of the calcaneus in the human skeleton?

    <p>At the heel of the foot</p> Signup and view all the answers

    Which bone is located directly beneath the sacrum?

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

    Which statement accurately describes the coccyx?

    <p>It is positioned below the sacrum</p> Signup and view all the answers

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