levers, planes and axes Flashcards

1
Q

what is a lever made of?

A

Bones, joints and muscles and soft tissue

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2
Q

functions of a lever

A

To generate muscular effort to overcome a given load, and to increase the speed of a given movement 

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3
Q

what is a lever?

A

A rigid bar that turns around an axis to create movement the force to move the lever comes from muscle 

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4
Q

what are the three parts of a lever?

A

Fulcrum, resistance and effort

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5
Q

what is the fulcrum?

A

fixed point where lever systems pivot

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6
Q

what is the resistance?

A

Theload moved usually involving weights 

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7
Q

What is the effort?

A

Force applied to move resistance provided by muscles 

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8
Q

123

A

FRE

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9
Q

first class lever

A

Fulcrum is between effort and resistance, like the elbow during javelin 

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10
Q

Second class lever

A

the fulcrum lies at one end with the effort at the other end, like the ankle

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11
Q

third class lever

A

The fulcrum is located at one end, and the resistance is at the other end, like the elbow during a bicep curl

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12
Q

efficiency of a lever

A

Effort divided by weight

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13
Q

what increases mechanical avantage

A

a longer effort arm

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14
Q

sagittal axis

A

Goes through your stomach, side to side movement, abduction, adoption

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15
Q

transverse axis

A

Through the hips, forward or backward movement, extension and flexion

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16
Q

longitudinal axis

A

Access from head to toe, rotational, or turning movements, rotation 

17
Q

frontal plane

A

Cuts body into front and back, side to side

18
Q

sagittal plane

A

Cuts body into left and right, forwards and backwards

19
Q

transverse plane

A

Cuts body into top and bottom, rotational, twisting