Question | Answer |
Type & Example of Bony Joints | Syntosis, Fusion of two frontal bones into one. Ex, a frontal bone. Synarthrotic- Immovable. |
Type & Example of Fibrous Joints | Suture (frontal/parietal bones) Gomphosis (Teeth and mandible) and Syndesmosis (Tibia & Fibula). Amphiarthrotic-Semimoveable. |
Type & Example of Cartilaginous Joints | Synchondrosis (Epiphyseal plate/costal cartilages), Symphysis (between vertebrae, pubic bones) Amphiarthrotic-Semimoveable. |
Types & Examples of Synovial Joints | Gliding-Between carpal bonesHinge-Humerus and UlnaPivot-Atlas & AxisCondyloid-Radius and ScaphoidSaddle-Trapezium and 1st metacarpalBall-and-socket- Acetabulum and femurDiarthrotic-Freely moveable |
Synovial Joints classified by the level of movement. | Least to Most:Plane (Glididng)HingePivotCondyloidSaddleBall and Socket |
Tempromandibular joint | The only diarthrotic joint in the skull. Both a hinge and gliding joint. |
Humeroulnar Joint | Elbow joint. Hinge and pivot joint. |
Acetabulofemoral Joint | Hip Joint. Acetabular labrum deepens the socket. (Cartiliginous ring). |
Glenohumeral Joint | Shoulder Joint. Deepened by the glenoid labrum. Rotator cuff muscles stabalize the joint. |
Tibiofemoral Joint | Knee Joint. Hinge joint with little to no movement. |
Flexion | A decrease in the joint angle |
Extension | The return to anatomical position. |
Hyperextension | Extending the body part beyond anatomical position. |
Abduction | Movement of the limbs away from the body. |
Adduction | The return of the body part to anatomic positon. Adding to the body. |
Rotation | Circular movement of a part of the body. Lateral-toward the lateral side of the body. Medial-toward the midline of the body. |
Supination | Palms facing forward. (anatomic position). |
Pronation | Medial rotation of the hands. |
Circumduction | Movement of a muscle in a conical shape. |
Protraction | Horizontal movement in the anterior direction. |
Retraction | Horizontal movement from the posterior to the anterior direction. |
Elevation | Movement in the superior direction |
Depression | Movement in the inferior direction. |
Inversion | (Supination). Turning the soles of the feet medially so they face each other. |
Eversion | (Pronation) Turning the soles of the feet laterally (outward). |
Fixing | Prevention of any muscle contraction in either direction |
Prime mover | The muscle that has the main force on a joint. |
Synergists | Muscles that work with the prime mover. |
Antagonists | Oppose the prime mover. |