Advanced Intervertebral Joints Quiz

Q1. Which feature of thoracic zygapophysial joint orientation facilitates axial rotation?

• Fusion of adjacent facet joints
• Predominantly horizontal orientation of the vertebral bodies
• Predominantly coronal orientation of the articular facets
• Complete absence of articular processes

Q2. Why are thoracic intervertebral discs proportionally thinner than those in the cervical and lumbar regions?

• Thoracic vertebrae do not transmit body weight
• The thoracic vertebrae are normally fused
• Thoracic discs contain no nucleus pulposus
• The thoracic region emphasizes stability and has a smaller range of flexion and extension

Q3. Which portion of an intervertebral disc primarily resists tensile and torsional stresses?

• Synovial membrane
• Nucleus pulposus
• Ligamentum flavum
• Annulus fibrosus

Q4. Which component of the intervertebral disc is primarily responsible for distributing compressive loads?

• Facet joint capsule
• Interspinous ligament
• Posterior longitudinal ligament
• Nucleus pulposus

Q5. Which ligament forms part of the posterior wall of the vertebral canal between adjacent laminae?

• Intertransverse ligament
• Radiate ligament
• Anterior longitudinal ligament
• Ligamentum flavum

Q6. What property of the ligamenta flava helps the vertebral column return toward an upright position after flexion?

• Presence of a nucleus pulposus
• Attachment to the ribs
• Complete calcification
• High elastic fiber content

Q7. Which nerves provide articular innervation to thoracic zygapophysial joints?

• Thoracic splanchnic nerves
• Medial branches of posterior rami of spinal nerves
• Vagus nerves
• Phrenic nerves

Q8. Why is the thoracic vertebral column generally more stable than the cervical vertebral column?

• All thoracic intervertebral joints are fused
• Thoracic vertebrae contain no intervertebral discs
• Thoracic vertebrae lack articular processes
• Its joints and ligaments are reinforced functionally by the thoracic cage

Q9. Which combination most strongly limits extension of the thoracic vertebral column?

• Posterior longitudinal ligament and sternocostal joints only
• Intercostal nerves and sympathetic trunks
• Nucleus pulposus and costal cartilage only
• Anterior longitudinal ligament, facet orientation, and overlapping spinous processes

Q10. Which description best summarizes the intervertebral joints of the thoracic region?

• A combination of vertebral body symphyses and synovial facet joints that provide stability and controlled movement
• Only synovial joints between adjacent vertebral bodies
• Only cartilaginous joints between adjacent articular processes
• A series of fused fibrous joints that prevent thoracic spinal movement