Certified Electronic Health Records Specialist (CEHRS) Practice Exam

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What type of joints are characterized as freely moving and encapsulated?

Synovial joints
Cartilaginous joints
Fibrous joints
Fixed joints

The correct answer is: Synovial joints

Synovial joints are defined by their unique structure and functionality, allowing for a wide range of motion. These joints feature a synovial cavity filled with synovial fluid, which lubricates the joint and reduces friction during movement. The encapsulation is provided by a joint capsule made of connective tissue, which surrounds the joint, adding stability while still allowing for mobility. This combination of a lubricated space and a supportive capsule enables activities such as bending, twisting, and rotation, which are all characteristics of freely moving joints. Additionally, synovial joints encompass several subtypes, including hinge joints (like the knee), ball-and-socket joints (like the hip), and pivot joints (like those in the neck), further illustrating the versatility and essential role of these joints in the human body.