The Vertebral Column: Structure and Function
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Questions and Answers

What is the main function of the vertebral column?

  • To provide mobility to the head
  • To provide a base of support for the head and internal organs (correct)
  • To attach muscles to the rib cage
  • To protect the rib cage

How many distinct vertebrae are there in the vertebral column?

  • 30
  • 24 (correct)
  • 20
  • 28

What is the number of nerve roots in the vertebral column?

  • 36
  • 20
  • 31 (correct)
  • 25

What type of curves have a posterior concavity?

<p>Lordotic curves (D)</p> Signup and view all the answers

What is the function of the vertebral column in relation to the trunk?

<p>To link between the upper and the lower extremities (C)</p> Signup and view all the answers

How many intervertebral disks are in the vertebral column?

<p>23 (D)</p> Signup and view all the answers

What is the function of the vertebral column in relation to the spinal cord?

<p>To protect the spinal cord (A)</p> Signup and view all the answers

How many fused vertebrae are in the vertebral column?

<p>9 (D)</p> Signup and view all the answers

What type of force resists sliding between joint surfaces in the mid to lower cervical spine?

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

What is the phenomenon called when movement of the vertebral column in one plane is associated with an automatic movement in another plane?

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

What is the number of independent movements allowed at a joint?

<p>6 (B)</p> Signup and view all the answers

What is the ability of the vertebral column to resist an applied load?

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

What type of stress is the vertebral column subjected to during normal functional activities?

<p>Multiple types, including axial compression, tension, bending, torsion, and shear stress (A)</p> Signup and view all the answers

What factors affect the vertebral column's ability to resist applied loads?

<p>Multiple factors, including age, posture, type of loading, and the condition and properties of structural elements (B)</p> Signup and view all the answers

What consists of two adjacent vertebrae and the intervening soft tissue?

<p>Motion segment (D)</p> Signup and view all the answers

What is the association between axial rotation and lateral flexion?

<p>A type of spinal coupling (C)</p> Signup and view all the answers

What happens to the nucleus pulposus during flexion?

<p>It migrates posteriorly, away from neural tissue (A)</p> Signup and view all the answers

What is the effect of flexion on the intervertebral foramina?

<p>It increases their size (A)</p> Signup and view all the answers

What happens to the load during flexion?

<p>It is transferred from the apophyseal joints to the intervertebral discs (A)</p> Signup and view all the answers

What is the effect of flexion on the posterior connective tissues?

<p>It increases tension (A)</p> Signup and view all the answers

What happens to the anterior side of the annulus fibrosus during flexion?

<p>It is compressed (C)</p> Signup and view all the answers

What happens to the nucleus pulposus during extension?

<p>It migrates anteriorly, toward neural tissue (A)</p> Signup and view all the answers

What is the effect of extension on the intervertebral foramina?

<p>It decreases their size (C)</p> Signup and view all the answers

What happens to the load during extension?

<p>It is transferred from the intervertebral discs to the apophyseal joints (C)</p> Signup and view all the answers

What is the effect of extension on the posterior connective tissues?

<p>It decreases tension (A)</p> Signup and view all the answers

What happens to the anterior side of the annulus fibrosus during extension?

<p>It is stretched (A)</p> Signup and view all the answers

What is the primary curve of the thoracic region?

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

What type of system helps to resist shearing forces in the vertebral body?

<p>Oblique trabecular system (B)</p> Signup and view all the answers

Where is the area of weakness located in the vertebral body?

<p>Anterior portion of the body (C)</p> Signup and view all the answers

What is the function of the lamellae in the annulus fibrosus?

<p>To keep the nucleus pulposus under constant pressure (C)</p> Signup and view all the answers

What is the composition of the nucleus pulposus?

<p>High concentration of fluid and proteoglycans (D)</p> Signup and view all the answers

What type of curve is the cervical curve?

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

What is the function of the vertical trabecular system?

<p>To resist compression forces (A)</p> Signup and view all the answers

What is the direction of the collagen fibers in adjacent rings of the annulus fibrosus?

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

What is the function of the apophyseal joint?

<p>To guide intervertebral motion (A)</p> Signup and view all the answers

What type of movement is described by the term 'lateral flexion'?

<p>Side bending to the right or left (A)</p> Signup and view all the answers

What is the term for the movement of the spine as a whole?

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

What is the function of the interbody joint?

<p>To serve as a deformable intervertebral spacer (D)</p> Signup and view all the answers

What is the term for the movement of individual joints in the spine?

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

What is the term for the movement of multiple joints in the spine working together?

<p>Coupled movements (D)</p> Signup and view all the answers

What is the name of the ligament that runs along the front of the spine?

<p>Anterior longitudinal ligament (B)</p> Signup and view all the answers

What is the term for the movement of a joint surface in a linear or curvilinear direction?

<p>Sliding or gliding (D)</p> Signup and view all the answers

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