Study GuideAnatomy and Physiology–Articulations1.Classifying JointsThe human body can perform amazing movements—like dancing, running, and playing sports—because ofjoints. Joints make the skeletonmovable, not stiff like a statue.At the same time, joints also help with:•stability•support•protectionA very important idea to remember is:More mobility usually means less stability.For example:•Skull sutures(between cranial bones) are almost immovable, but they are very stable andprotect the brain well.•Theshoulder joint(a ball-and-socket joint) allows many movements, but it is less stable,which is why shoulder injuries are common.What is a Joint?Ajoint(also called anarticulation) isany place where two bones meet.Joints are classified intwo ways:1.Structural classification2.Functional classificationPreview Mode
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