Musculoskeletal System Quiz

Questions and Answers

Synarthroses, Amphiarthroses, and Diarthroses.

Secretion of synovial fluid, synthetic activity, and immunologic role.

Type A synoviocytes are macrophage-like, while Type B synoviocytes are fibroblast-like.

Type II collagen is found in cartilage, while Type I collagen is found in bone. Signup and view all the answers

Nutrition and lubrication of the joint. Signup and view all the answers

The hip joint is an example of a ball and socket joint, allowing for a wide range of motion. Signup and view all the answers

Plasma ultrafiltrate, hyaluronic acid, lubricin, and regulatory factors. Signup and view all the answers

Study Notes

Synarthroses (e.g., syndesmosis): Includes skull sutures.
Amphiarthroses (e.g., synchondrosis): Includes pubic symphysis and intervertebral discs.
Diarthroses: Refers to synovial joints, which are more mobile.

Saddle Joint: Example - Carpometacarpal (CMC) joint.
Ball and Socket Joint: Examples - Hip and shoulder joints.
Pivot Joint: Example - Atlantoaxial joint.
Condyloid Joint: Example - Radiocarpal joint.
Planar (Gliding) Joint: Examples - Carpal bones, acromioclavicular joint, patella.
Hinge Joint: Example - Elbow. Modified hinge joint - Knee.

Comprises a joint capsule, ligaments, and tendons consisting of Type I collagen.
Contains synovium, cartilage composed of Type II collagen, and bone made of Type I collagen.

Physiologic Functions:
- Secretes synovial fluid.
- Engages in synthetic activity for joint maintenance.
- Plays an immunologic role to protect against inflammation and infection.

Consists of Synoviocytes:
- Type A (10-20%): Macrophage-like function.
- Type B (80-90%): Fibroblast-like function.
Includes synovial stroma and synovial vasculature.

Function: Provides nutrition and lubrication for joints.
Production: Formed from plasma ultrafiltrate and generated factors including hyaluronic acid and lubricin.
Cellular Composition: Contains various cells that play roles in joint health and maintenance.