Unit 1 Flashcards
3 function of skeleton
-shape and support : gives the body structure
-allows movement of the body : muscles attach to bones which help us move
-to produce red and white blood cells
Ligament
A fibrous connective tissue that attaches BONE to BONE
Tendon
A fibrous connective tissue that attaches MUSCLE to BONE
Cartilage
A soft connective tissue that protects your joints and bones - acts as a shock absorber
What’s a synovial joint
A synovial joint is a type of joint in the body which allows a lot of movement , also known as a freely moveable joint
Articulating bones
Bones that join
Flexion , extension
Flexion - decreasing the angle at the joint
Extension - increasing the angle at the joint
Abduction,addiction
Abduction-more limb away from the midline
Adduction-more limb towards the midline
Rotation,circumdariin
Rotation-twisting
Circumdation-circling
What’s an antagonistic pair
Muscles work in pairs
Agonist
This is the muscle that produces or controls the desired joint movement also known as the PRIMER MOVER
Antagonist
This counters the action of the agonist,to ensure that movements are controlled
Fixator
This muscle work with others to stabilise the origin of the agonist
-e.g the trapezes contracts to stabilise the origin of the biceps
Lever
A lever system is the coordination of bones and muscle to create movement
Lever is a…
Bone
Fulcrum is a …
Joint
Effort is a …
Muscular force
Load is …
Weight of body part or object
What is the nickname to remover the lever system
1 2 3
N L E
N A E
^ v v
What is mechanical advantage
The ability of a lever system to move a large load with a small effort
Planes of movement
Imaginary lines that run through the body to describe the direction of movement
