key term - Pectoral girdle

Definition

The pectoral girdle, also known as the shoulder girdle, comprises the clavicles (collarbones) and scapulae (shoulder blades) that connect the upper limb to the axial skeleton. It provides attachment points for numerous muscles and allows for a wide range of motion in the shoulder.

Related terms

Clavicle:

A long bone that serves as a strut between the shoulder blade and sternum, playing a key role in positioning the arm freely.

Scapula:

A flat triangular bone that forms part of the pectoral girdle on each side of the upper back, providing attachment points for muscles.

Axial Skeleton:

The part of the skeleton that consists of bones of the head and trunk, serving as a central core to which limbs are attached