Scapulocoracoid

Scapulocoracoid is a term used in anatomy to refer to the combined structure of the scapula and coracoid in certain animals, particularly in birds and reptiles. This structure plays a crucial role in the movement and functionality of the wing or forelimb.

Structure[edit | edit source]

The scapulocoracoid is a single bone that is formed by the fusion of the scapula and the coracoid, two bones that are separate in mammals. The scapula, or shoulder blade, is a large, flat bone located in the upper back, while the coracoid is a smaller bone that extends from the scapula to the front of the shoulder.

In birds, the scapulocoracoid is a robust structure that provides a strong support for the wing. The scapula is long and thin, extending along the side of the ribcage, while the coracoid is a thick, pillar-like bone that extends from the scapula to the sternum. The two bones are fused together to form a single structure that provides a stable base for the wing muscles.

In reptiles, the scapulocoracoid is a similar structure, but it is typically less robust than in birds. The scapula and coracoid are often not as tightly fused together, allowing for more flexibility in the forelimb.

Function[edit | edit source]

The scapulocoracoid plays a crucial role in the movement of the wing or forelimb. It provides a stable base for the attachment of muscles and acts as a pivot point for the movement of the limb. In birds, the scapulocoracoid is particularly important for flight, as it provides the necessary support and stability for the powerful wing muscles.