The pectoral girdle is responsible for supporting the forelimbs and protecting the inner organs, foremost of which are the lungs and heart. It is made up of bones and cartilages that provide a foundation for attachment of muscles which are involved in the movement of the forelimb. Amphibians like frogs have a very distinct pectoral girdle compared to other vertebrates. This is because their mode of locomotion requires swimming as much as they require jumping.
In a frog, there are three basic components on the side that help to form the pectoral girdle
These structures are bound together by cartilage and ligaments thus forming a functional unit.
There are two forms of pectoral girdle in frogs:
(Session 2025 - 26)