Question

When the shoulder joint horizontal adduction - the shoulder girdle.

a) Becomes unstable
b) Experiences increased flexibility
c) Moves medially
d) Moves laterally

Answer 1

The shoulder joint exhibits horizontal adduction when the arm moves across the midline of the body in a forward direction due to the medial rotation of the humerus.

Step-by-step explanation:

The shoulder joint exhibits horizontal adduction when the arm moves across the midline of the body in a forward direction. This movement is achieved by the medial rotation of the humerus and is a part of the glenohumeral joint's multiaxial ball-and-socket motion. As a result, the correct option is c) Moves medially.