Scapulae

Definition

The scapulae, commonly known as shoulder blades, are two flat, triangular bones located on each side of the upper back. They play a crucial role in connecting the humerus (upper arm bone) with the clavicle (collarbone).

5 Must Know Facts For Your Next Test

1. The scapulae are part of the appendicular skeleton.
2. Each scapula has three borders: superior, medial, and lateral.
3. They provide attachment points for many muscles that facilitate shoulder and arm movement.
4. The glenoid cavity of the scapula articulates with the head of the humerus to form the shoulder joint.
5. Scapulae are involved in movements such as elevation, depression, protraction, retraction, and rotation.

Related terms

Humerus: The long bone in the upper arm that connects to the scapula at its proximal end.

Clavicle: Also known as the collarbone, it serves as a strut between the shoulder blade and sternum.

Glenoid Cavity: A shallow socket on the scapula that articulates with the head of the humerus to form part of the shoulder joint.