Chapter 9: Joints Flashcards
3 Classifications (based on movement of that joint and how they articulate)
Joint classifications
Immovable
Fibrous (Synarthrosis)
Slightly moveable
Cartilaginous (Amphiarthrosis)
Freely moveable
Synovial (Diarthrosis)
Sutures
Syndesmosis
Found between long bones with large distance between articulations
Synarthrosis joints (Fibrous)
Slightly moveable and held together by cartilage
Amphiarthrosis joints(cartilaginous)
Examples of amphiarthrosis joints(cartilaginous)
Freely moving
Diarthrosis Joints(Synovial)
Joint capsule”
Surrounds the joint
Articular Capsule
Lubricates the joint
Absorbs shock
Synovial Membrane and Fluid
Limit motion
Accessory Ligaments
Shock absorption (probably)
Articular Discs
Coat the articular surface for better contact
Labra
Wrapped around a tendon as it passes through tunnels or openings to reduce friction between bone and muscle
Tendon Sheath
Saclike structures in certain joints that cushion the movement between bone and muscles tendons or ligaments
Bursae
Types of movements for synovial jointsbasic movements
Flexion
Extension
Lateral Flexion
Abduction
Adduction
Circumduction
Rotation
Movement away from the midline
Abduction
Movement toward the midline
Adduction
Movement of the distal end of the body part in a circle
Combination of flexion, extension, abduction and adduction at same time
Circumduction
A bone revolving around its own axis
Defined in relation to the midline of the body
Rotation
Superior movement
Elevation