The joint that allows no movement is a fibrous joint.
Understanding Immovable Joints
Fibrous joints, also known as synarthroses, are characterized by the presence of fibrous connective tissue, mainly collagen, between the bones. This structure effectively restricts any significant movement. The term "Synarthroses" itself explains this immobility: "Syn-" means fused, and "Arthrosis" refers to a joint.
Examples of Fibrous Joints
While not explicitly mentioned in the reference, here are some examples of fibrous joints that further illustrate their immobility:
- Sutures of the skull: These are the most common examples, where the skull bones are tightly interlocked with connective tissue.
- Gomphosis: This type of joint anchors teeth to the jawbone.
- Syndesmoses: These joints connect bones with strong ligaments, allowing for very limited movement.
Types of Joints Explained
For clarity, let's look at the different types of joints:
| Joint Type | Movement | Characteristics | Example |
|---|---|---|---|
| Fibrous | Immovable | Bones connected by dense connective tissue (collagen). | Sutures of the skull |
| Cartilaginous | Slightly Movable | Bones connected by cartilage, allowing for limited movement. | Intervertebral discs |
| Synovial | Freely Movable | Bones separated by a fluid-filled joint cavity, allowing for a wide range of motion. Structures like ligaments stabilize the joint. | Knee, shoulder, hip, elbow |
