Articulations and Body Movements
1. Typically allows a slight degree of movement
2. Includes joints between the vertebral bodies and pubic symphysis
3. Characterized by cartilage connecting the bony portions
1. Essentially immovable joints
2. Sutures are most remembered examples
3. Bone regions united by fibrous connective tissue
1. Characterized by fibrous articular capsule lined with a synovial membrane surrounding joint cavity
2. Freely movable or diarthrotic
3. Hip, knee, elbow joints
Dense connective tissue that connects bones together and stabilizes joints during movement
Connective tissue that connects muscle to bone
Connective tissue that cushions the bone and allows a "gliding" motion
Soft connective tissue secretes fluid to lubricate joint and reduce friction
Fibrous connective tissue that prevents friction within the joints
Joint between the axis and atlas
Ball and socket
Intervertebral joints between articular processes
Joint between forearm bones and wrist
Joint between talus and fibia/tibula
Joint between skull and vertebral column
Joint between jaw and skull
Joints between proximal phalanges and metacarpal bones
Ball and socket
Condyloid and saddle
Hinge and pivot
Name two important factors that contribute to the stability of the hip joint.
Deep socket to femur, and strongly enforced articular capsule
Name two important factors that contribute to the stability of the knee.
Menisci and ligaments and tendons crossing
Shoulder joint is built for mobility; list four factors that contribute to the range of motion at the shoulder.
1. Large head of humerus moves easily against shallow glenoid cavity of scapula
2. Ball and socket joint; most flexibility
3. Articular capsule thin and loose
4. Few ligaments stengthening joint
During muscle contraction
The insertion moves toward the origin
What structural joint changes are common to the elderly?
Joints degenerate. Adhesions may form where bones joint, and extraneous bone tissue can grow along joint edges
Reinforcing ligaments are damaged due to excessive strain.
Bones forced out of their normal position in joint cavity.
What type of tissue damage might you expect to find in a dislocated joint?
1. Torn/stressed ligament and inflammation.
2. Joint capsule and ligaments remain stretched.