Understanding Synarthrodial Joints: Types and Functions

Synarthrodial joints are joints in which the bones are connected by a fibrous connective tissue called an articular disc. This type of joint is found in the skull, where the bones are held together by a series of small, flat discs that allow for limited movement.

Examples of synarthrodial joints include:

1. Craniofacial joints: These joints connect the bones of the skull to each other and allow for slight movements of the head and face.
2. Temporomandibular joint (TMJ): This joint connects the jawbone to the skull and allows for movement of the lower jaw during biting and chewing.
3. Sacroiliac joint: This joint connects the sacrum to the ilium bone in the pelvis and allows for slight movements of the spine.
4. Symphysis pubis: This joint connects the two pubic bones in the front of the pelvis and allows for movement of the pelvis during childbirth.

Synarthrodial joints are characterized by a lack of cartilage and a fibrous connective tissue called an articular disc that connects the bones. These joints allow for limited movement, but they do not have the same range of motion as diarthrodial joints, which are synovial joints with a cartilage surface.