Joint Jumpstarter
What is another word for a joint?
Articulation
Which type of joint allows no movement?
Synarthrosis
What secretes synovial fluid?
Hinge joint
Which joint works like a door hinge?
Hinge joint
What is the only bone with no joints?
Hyoid
What are the two main functions of joints?
Stability & mobility
Which type of joint allows slight movement?
Amphiarthrosis
What does articular cartilage do?
Cushions ends of bones, reduces friction
Which joint lets the head rotate side to side?
Pivot joint (atlas and axis)
Which joint type allows the most movement?
Ball-and-socket
True or False: Joints are just gaps between bones.
False — They are complex structures
Which type of joint allows free movement?
Diarthrosis
What does a bursa do?
Cushions between bones, tendons, and skin
Which joint allows thumb opposition?
Saddle joint
What are gliding joints also called?
Plane joints
Which bone does not form a joint?
Hyoid
Example of a synarthrosis?
Skull sutures
What does the joint capsule do?
Stabilizes and encloses the joint
Which joint allows flexion/extension and side-to-side motion but no rotation?
Condyloid joint
What joint is between the atlas and axis? (The atlas (C1) and axis (C2) are the first two cervical vertebrae at the top of your spine, just beneath your skull. )
Pivot joint (atlantoaxial)
Define a joint in your own words.
A joint is where two or more bones meet, allowing movement and/or providing stability
Example of an amphiarthrosis?
Pubic symphysis or between vertebrae
What do ligaments do?
Connect bone to bone, stabilize joint
Which type allows movement in all directions?
Ball-and-socket joint
What protects the brain by fusing in infancy?
Synarthrotic sutures