Question

which of the following is an example of ball-and-socket joint?
a shoulder
b neck
c elbow
d none of the above

Explanation:

Ball-and-socket joints allow rotational and multi-directional movement, formed by a rounded bone end fitting into a cup-shaped socket. The shoulder joint (humeral head fitting into the glenoid fossa) is a classic ball-and-socket joint. The neck is a pivot joint, and the elbow is a hinge joint.

Answer:

a. Shoulder