Unit 2- Movement Analysis Flashcards
State 4 parts of a lever
Lever arm, fulcrum, load and effort
What is the lever arm
The bone
What is the fulcrum
The joint (where the lever rotates)
What is the load
The weight of resistance to be moved (either a weight or body weight)
What is the effort
Force applied to lift the load (muscle)
What are the names of each lever
1st class, 2nd class, 3rd class
What is the load arm
Distance from the fulcrum to the load
What is the effort arm
Distance from fulcrum to the effort
What is mechanical advantage
When large loads can be lifted easily with little effort , smaller range of movement
What is mechanical disadvantage
When large loads can be lifted but with most effort creating a bigger faster movement, there is a greater range of movement
What is a plane
Imaginary line dividing the body in two
What is an axis
Imaginary straight line around which the body rotates
Name the 3 types of planes found in the body
Sagittal frontal transverse
Name the 3 axis found in the body
Sagittal frontal vertical
What plane goes with the frontal axis
Sagittal
What plane goes with the sagittal axis
Frontal
What plane goes with the vertical axis
Transverse
Acronym to remember plane and axes
Falling sideways = frontal sagittal
Spinning forwards = sagittal frontal
Twisting vertically = transverse vertical
What is the frontal plane
Divides you into front and back
What occurs at the sagittal axis
Adduction and abduction
What is the sagittal plane
Divides you into left and right
What occurs at the frontal axis
Flexion and extension
What is the traverse plane
Divides into top and bottom
What movement occurs at the vertical axes
Rotation
Where does 1st class lever tend to be
Neck joint
Or extension at elbow
Where does 2nd class lever tend to be
Ball of food joint
Where does 3rd class lever tend to be
Flexion at elbow
