Joints Flashcards
What are joints
Where bones articulate (move)
What are joints made up of (5)
- Ligaments
- Tendons
- Synovial Fluid
- Articular Cartilage
- Joint Capsule
What do ligaments do (2)
- connect bone to bone
- give joints stability
What do tendons do
join muscle to bone
What does synovial fluid do
lubricates joint
What does articular cartilage do (2)
- absorb shock
- prevent friction
Where is articular cartilage found
ends of bones
What do joint capsules do (2)
- strengthens joint
- releases synovial fluid
How do bones move
muscles pull bones (can’t push)
What do muscles work in
antagonistic pairs
which muscle is agonist
working muscle
which muscle is antagonist
relaxing muscle
what is agonist responsible for
creating movement at joint
concentric contraction
muscle shortening under tension
what is antagonist responsible for
providing resistance for co-ordinated movement
antagonist is normally ________
relaxing
eccentric contraction
muscle lengthening under tension
what is a fixator
muscle that stabilises a joint
what does a fixator allow an agonist to do
produce a movement
isometric contraction
muscle is contracting but not moving
(e.g rugby scrum)
Elbow joint type
hinge
bones that articulate elbow (3)
- humerus
- radius
- ulna
movements elbow joint can perform (2)
- flexion
- extension
elbow antagonistic pair
- bicep brachii
- tricep brachii