Joints

Question 1

Lateral Atlantoaxial Zygapophysial Joints

Answer 1

• Between the superior articular facets of the axis (C2) and the inferior articular facets of the atlas (C1), on the sides.
• Allow head rotation.
• SYNOVIAL plane

Question 2

Medial Atlantoaxial Joint

Answer 2

• Between dens of the axis (C2) and the anterior arch of the atlas (C1), in the middle.
• Allows pivoting motion, critical for head rotation
• SYNOVIAL pivot, stabilized by the transverse ligament of the atlas.

Question 3

Interbody joint

Answer 3

• Between vertebral bodies of adjacent vertebrae and the intervertebral disc.
• Absorbs shock, transmits loads, and provides spinal flexibility.
• CARTILGANIOUS symphysis

Question 4

Zygapophysial Joints

Answer 4

• Between the inferior articular facets of the superior vertebra and the superior articular facets of the vertebra below.
• Allows controlled movements like flexion, extension, and rotation, while providing stability.
• SYNOVIAL plane