Symphyses

Definition

Symphyses are a type of cartilaginous joint where bones are united by fibrocartilage. These joints offer limited movement and significant strength, typically found in the midline of the body.

5 Must Know Facts For Your Next Test

1. Symphyses are classified as amphiarthroses, meaning they allow slight movement.
2. The pubic symphysis is a prominent example, connecting the left and right pubic bones.
3. Intervertebral discs between vertebrae are another example of symphyses, providing cushioning and flexibility to the spine.
4. These joints contain a pad of fibrocartilage that acts as a shock absorber and stabilizer.
5. During childbirth, the pubic symphysis can slightly widen to facilitate passage through the birth canal.

Review Questions

• What type of joint is characterized by being united by fibrocartilage?
• Name two examples of symphyses in the human body.
• How do symphyses contribute to movement and stability?

Related terms

Amphiarthroses: Joints that allow slight movement and include both symphyses and syndesmoses.

Fibrocartilage: A tough, dense type of cartilage found in intervertebral discs and at sites like the pubic symphysis.

Intervertebral Discs: Structures composed of fibrocartilage that provide cushioning between vertebrae in the spinal column.