Concept Map: Classification of Joints Drag the appropriate labels to their respective targets. View Available Hint(s) Reset Help sutures, synchondroses, immobile or slightly cartilaginous joints all joints synovial joints freely movable plane, hinge, pivot, condylar, saddle ball-and-socket may be fibrous joints are functionally described as include classified into may be are functionally described as include classified into may be are functionally described as include classified into
The Correct Answer and Explanation is:
Here’s the correct arrangement for the Concept Map: Classification of Joints, along with a 300-word explanation:
Concept Map Answer:
- All joints
→ are functionally described as
→ immobile or slightly movable
→ may be
→ fibrous joints
→ cartilaginous joints - All joints
→ are functionally described as
→ freely movable
→ are
→ synovial joints
→ include
→ plane, hinge, pivot, condylar, saddle, ball-and-socket - Fibrous joints
→ include
→ sutures - Cartilaginous joints
→ include
→ synchondroses
Explanation
Joints, or articulations, are the connections between bones in the skeletal system. They are classified in two primary ways: structurally and functionally.
Functionally, joints are grouped based on the amount of movement they allow:
- Synarthroses (immovable),
- Amphiarthroses (slightly movable),
- Diarthroses (freely movable).
Synarthroses and amphiarthroses typically include fibrous and cartilaginous joints. Fibrous joints, like sutures in the skull, are held together by dense connective tissue and do not allow movement. Cartilaginous joints, such as synchondroses, are connected by cartilage and allow limited movement. These joints provide stability while permitting slight flexibility in certain regions like the spine or rib cage.
Diarthroses, or synovial joints, are the most mobile and structurally complex. These joints feature a joint cavity filled with synovial fluid, which reduces friction during movement. They are further classified into six types based on the shapes of the articulating surfaces and the types of motion they allow:
- Plane joints (gliding movements),
- Hinge joints (like the elbow),
- Pivot joints (like the atlantoaxial joint in the neck),
- Condylar joints (e.g., wrist),
- Saddle joints (e.g., thumb),
- Ball-and-socket joints (e.g., shoulder and hip).
Understanding this classification system is essential in anatomy and medicine, as it provides insight into how the body moves and what types of injuries or disorders may affect different joints.
