Final answer:
The term 'subscapular' refers to the region under the shoulder blade, which is part of the pectoral girdle consisting of clavicles and scapulas. These bones are crucial for the shoulder's range of motion and stability.
Step-by-step explanation:
A term meaning "pertaining to under the shoulder bone" is subscapular. The word 'sub' often indicates 'underneath' or 'beneath', and 'scapula' refers to the shoulder blade. The area called the subscapular region is located beneath the scapula, which is part of the pectoral girdle, comprising the paired clavicles (collar bones) and scapulas (shoulder blades). These bones are essential for shoulder and arm movements, such as circumduction, which is the movement of a limb in a circular motion. Together, the clavicle and scapula support movements and serve as attachment sites for various muscles that contribute to the shoulder's function and stability.