Question

Raman was wondering why bones in his skull cannot move the same way his elbow bends. Identify the correct reason for that.

• A. Bones of the skull have ball and socket joints.
• B. Bones of the skull have fixed joints.
• C. Bones of the skull have hinge joints.
• D. Bones of the skull have pivot joint.

Answer 1

The correct option is B Bones of the skull have fixed joints.

$\bullet$ The skull has 22 bones that are flat and strong. These bones make up the cranium and facial bones.
$\bullet$ Lower jaw is the only part of the skull that can move. All the other bones are joined by fixed joints.
$\bullet$ The elbow can move as it has a hinge joint. Apart from that, pivot joint also allows movement but fixed joint is immovable.
$\bullet$ This is the reason why bones in his skull cannot move the same way his elbow bends.