Question

Which one of the following statements is true:

• A. Head of humerus bone articulates with acetabulum of pectoral girdle.
• B. Head of humerus bone articulates with glenoid cavity of pectoral girdle.
• C. Head of humerus bone articulates with a cavity called acetabulum of pelvic girdle.
• D. Head of humerus bone articulates with a glenoid cavity of pelvic girdle.

Answer 1

The correct option is B

Head of humerus bone articulates with glenoid cavity of pectoral girdle.

The shoulder joint is a multiaxial synovial ball and socket joint and involves articulation between the glenoid cavity of the scapula (shoulder blade) and the head of the humerus (upper arm bone).