Vertebrae Joints and Intervertebral Discs

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Questions and Answers

What is the composition of the nucleus pulposus in the intervertebral disc?

  • 90% water, elastin, and glycoproteins
  • 70% water, keratin, and fibronectin
  • 60% water, hyaluronic acid, and fibrin
  • 80% water, collagen, and proteoglycans (correct)

Which ligament is located anterior to the vertebral bodies?

  • Supraespinous ligament
  • Posterior longitudinal ligament
  • Anterior longitudinal ligament (correct)
  • Intertransverse ligament

What is the function of the anterior longitudinal ligament?

  • Stabilizes the vertebrae during rotation
  • Prevents excessive extension of the spine (correct)
  • Allows lateral flexion of the spine
  • Supports the intervertebral discs

What is the main physical property of the intervertebral disc?

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

Which component of the intervertebral disc has concentric layers and inverse oblique fibers?

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

What type of joint are the zygapophyseal joints?

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

What causes radicular compression in disc herniation?

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

Which ligament is located posterior to the vertebral bodies?

<p>Posterior longitudinal ligament (A)</p> Signup and view all the answers

What is the range of movement of the symphysis (intervertebral disc) relative to body thickness?

<p>Increases from cranial to caudal (C)</p> Signup and view all the answers

What structure is the insertion point of the posterior longitudinal ligament?

<p>Intervertebral disc and endplates (B)</p> Signup and view all the answers

Which ligament is proximally attached to C1-C2 and distally attached to the posterior sacrococcygeal ligament?

<p>Tectorial membrane (C)</p> Signup and view all the answers

What is the function of the alar ligaments?

<p>Rotation of the atlas centered on the odontoid process (A)</p> Signup and view all the answers

Which structure does a typical rib articulate with at its costovertebral joint?

<p>Bodies of adjacent vertebrae (A)</p> Signup and view all the answers

What is the function of the costotransverse foramen?

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

What structure connects the tubercle of a rib to the transverse facet of its related vertebra?

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

Where are sternocostal joints found in relation to the ribs?

<p>At the junction of ribs with their costal cartilages (A)</p> Signup and view all the answers

What is the function of the chondrosternal ligament?

<p>&quot;Radiates&quot; from the sternum to form a membrane (A)</p> Signup and view all the answers

Where is the manubrium located within the sternum?

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

What type of joint is found between ribs VII to XI?

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

Flashcards

Anulus fibrosus

A tough, fibrous ring that surrounds the nucleus pulposus, composed of concentric layers of collagen fibers.

Nucleus Pulposus

The central, gelatinous portion of the intervertebral disc, primarily made of water, collagen, and proteoglycans.

Anterior Longitudinal Ligament

A ligament located on the anterior aspect of the vertebral bodies, restricting excessive spinal extension.

Incompressibility of the Intervertebral Disc

The intervertebral disc's ability to resist compression forces due to its unique structure.

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Zygapophyseal Joints

Joints connecting the superior and inferior articular processes of adjacent vertebrae, allowing for gliding movements.

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Disc Herniation

The protrusion of the nucleus pulposus through the anulus fibrosus, potentially compressing nearby nerves.

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Nucleus Pulposus in Disc Herniation

The part of the intervertebral disc that can extrude in a herniation, causing nerve compression.

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Posterior Longitudinal Ligament

A ligament located on the posterior aspect of the vertebral bodies, connecting to the intervertebral disc and endplates.

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Intervertebral Disc Motion Range

The range of motion (flexibility) of the intervertebral disc increases as you move down the spine.

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Tectorial Membrane

A strong ligament connecting the posterior aspect of the atlas (C1) to the axis (C2) and extending down to the sacrum.

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Alar Ligaments

Ligaments connecting the atlas (C1) to the odontoid process of the axis (C2) limiting atlas rotation.

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Costovertebral Joint

The joint between the head of a rib and the bodies of two adjacent vertebrae.

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Costotransverse Foramen

An opening between the transverse process and the vertebral body, providing a pathway for nerves and vessels.

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Costotransverse Ligament

A ligament connecting the tubercle of a rib (bony protrusion) to its corresponding vertebra.

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Sternocostal Joints

Joints located at the junction of the ribs and their associated costal cartilages.

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Chondrosternal Ligament

A strong ligament connecting the sternum to the costal cartilages of ribs VII to X.

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Manubrium of Sternum

The uppermost section of the sternum, connecting to the clavicles and first ribs.

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Synovial Joints (Ribs VII - XI)

The type of joint found between ribs VII to XI, allowing for gliding movements.

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