Objectives

​Things to know

• Distinguish between the functional and structural classifications for joints

• Describe the three functional types of joints and give an example of each

• List the three types of diarthrodial joints

A joint, also called an articulation, is any place where adjacent bones or bone and cartilage come together (articulate with each other) to form a connection. Joints are classified both structurally and functionally.

​Definition

Whether the adjacent bones articulate with each other within a fluid-filled space called a joint cavity.

​Or

Structural classifications of joints take into account whether the adjacent bones are strongly anchored to each other by fibrous connective tissue or cartilage

​What to look for

How to classify

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​A fibrous joint is where the adjacent bones are united by fibrous connective tissue.

​​Fibrous joint

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At a cartilaginous joint, the bones are joined by hyaline cartilage or fibrocartilage.

​​Cartilaginous joint

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At a synovial joint, the bones are not directly connected, instead connected within a joint cavity that is filled with a lubricating fluid.

​​Synovial joint

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Classwork

Work on classwork (on board) while being called up for posters and grades.

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