Question

which type of joint allows rotation of one bone around another like when rotating the head?
a. pivot
b. hinge
c. condyloid
d. saddle
please select the best answer from the choices provided.
a
b
c
d

Explanation:

• Pivot joint: Allows rotation of one bone around another. The joint between the atlas (C1 vertebra) and axis (C2 vertebra) in the neck is a pivot joint, enabling head rotation.
• Hinge joint: Allows movement in one plane (flexion and extension), like the elbow or knee.
• Condyloid joint: Allows movement in multiple planes (flexion/extension, abduction/adduction), but not rotation. Example: wrist.
• Saddle joint: Allows movement in two planes (flexion/extension, abduction/adduction), but not rotation. Example: thumb joint.

Answer:

A. pivot