1forces on both sides with axis in between
first class lever
2what is an example of a first class lever
seesaw
3apply a first class lever to OT
splinting, head/neck
4resistance in center, effort force and axis on either side
second class lever
5what is an example of a second class lever
wheelbarrow
6apply a second class lever to OT
heal raises = toes (axis) + calf muscles (effort force) + body weight (resistance)
7what are the most common levers in the body
third
8effort force in center with resistance and axis on either side
third class levers
9what is an example of a third class lever
tweezers
10apply a third class lever to OT
biceps muscle. Elbow would be the fulcrum. Bicep would be the effort or applied force, Resistance is the weight in our wrist or hand.
11________________ invovles balancing internal and external forces
stability
12Body uses __________________ to improve mechanical advantage.
levers