Question

Scapula extends between

• A. Second and fifth ribs
• B. Second and seventh ribs
• C. Third and sixth ribs
• D. Third and eighth ribs
• E. Fourth and seventh ribs

Answer 1

Answer: (B)

Second and seventh ribs

• Each pectoral girdle is formed of two halves. Each half of pectoral girdle consists of a clavicle and a scapula.
  
• The scapula is a large triangular flat bone situated in the dorsal part of the thorax between the second and the seventh ribs.
  
• The dorsal, flat, triangular body of scapula has a slightly elevated ridge called the spine which projects as a flat, expanded process called the acromion. The clavicle articulates with this.
• Below the acromion is a depression called the glenoid cavity which articulates with the head of the humerus to form the shoulder joint. Hence scapula extends between second and seventh ribs.
• So, the correct answer is 'Second and seventh ribs'.