![]() ![]() Students will be able to see the range of motion of the joint as well as visualize the role of connective tissue such as cartilage, tendons, and ligaments, in cushioning and facilitating motion. Students will research the types of synovial joints and will then observe the structure and function of a joint by dissecting and manipulating a cow elbow. It is these joints and the oily fluid-filled cavity that separates the bones that allow us to swing our arms or jump up and down. While all of the types of joints play a role in movement and protection of the human frame, this lesson will focus on synovial joints, freely moveable joints. ![]() The pubic symphysis, the piece of cartilage at the bottom of the pelvic bone, is actually a slightly moveable cartilaginous joint. Sutures in the skull are fibrous joints that connect the bones that shield your brain. These classifications are based on whether there is fibrous tissue, cartilage or a fluid filled cavity separating the bony ends of the joint. Structurally, joints are classified as fibrous, cartilaginous, or synovial. Freely movable joints are found on the appendicular skeleton and permit flexibility in the limbs. Other joints provide a greater degree of motion, but do not provide as much strength. Immovable joints and slightly movable joints are restricted mainly to the axial skeleton where protection and stability are key. Some joints permit very little movement, but are very strong and durable. Functionally, joints are classified by how much motion they allow. Joints can be classified by either their function or their structure. Without joints, we would be unable to bend and flex. Our skeletons are rigid and offer great protection and support, but thanks to joints, they are also flexible and allow for a great range of motion. With only one exception (the hyoid bone in the throat), every bone in the human body meets up with at least one other bone at junctions called joints. ![]() From the graceful movements of a ballerina to the intense moves of a wrestler, these actions require the coordinated motion of our muscles and bones. ![]()
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