Immovable joints are called synarthroses.
Synarthroses: Immovable Joints Explained
Synarthroses are a type of joint characterized by their immobility. According to the provided reference, these joints feature bones that are in very close contact, separated only by a thin layer of fibrous connective tissue. This structure effectively restricts movement between the bones.
Characteristics of Synarthroses:
- Immovable: The primary characteristic is the lack of movement between the bones.
- Close Contact: Bones are positioned very close together.
- Fibrous Connective Tissue: A thin layer of fibrous connective tissue connects the bones.
Examples of Synarthroses
While the reference doesn't provide examples, common examples of synarthroses include:
- Sutures in the Skull: The joints between the bones of the skull in adults are a prime example of synarthroses. These sutures allow for slight movement during development but become essentially immovable in adulthood.
- Gomphosis: The joint between a tooth and the jawbone is another example.
- Epiphyseal Plates: The cartilage plates located between the epiphysis and diaphysis of long bones in children before their closure.
In summary, synarthroses are immovable joints where bones are in close proximity and connected by a thin layer of fibrous connective tissue.
