joints, muscles and mechanics

  • Created by: ben
  • Created on: 19-05-13 12:50
what are the planes of the body?
sagittal, transverse, frontal
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what are the axis of the body?
horizontal, frontal, longitudinal
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what axis goes with what planes?
sagittal-horizontal plane, frontal-frontal, transverse-longitudinal
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what movement occurs at the sagittal plane?
1. flexion & extension. 2. plantar & dorsi flexion
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what movement occurs at the frontal plane?
1. abduction & adduction. 2. lateral flexion. 3. inversion & eversion
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what movement occurs at the transverse plane?
1. lateral & medial rotation. 2. pronation & supination
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where does each plane divide the body at?
1. sagittal-divides body vertically into left & right sides. 2. frontal- divides the body vertically into front & back sections. 3. transverse- divides the body into horizontally into top & bottom
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what are the types of muscular contraction?
isotonic & isometric
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what is isotonic contraction?
contraction of the muscles whilst moving. e.g. push-ups
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what is isometric contraction?
contraction of the muscle whilst not moving. e.g. planking
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what is eccentric & concentric contraction?
concentric- shortening of the muscle. eccentric- lengthening of the muscle
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what are the 3 components of the lever system?
fulcrum, resistance & effort
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at what positions are the fulcrum (F), resistance (R) & effort (E) in the 1st class lever system?
F- in the centre, R- either sides, E- either sides
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at what positions are the fulcrum (F), resistance (R) & effort (E) in the 2nd class lever system?
F- either ends, R- in the centre, E- either sides
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at what positions are the fulcrum (F), resistance (R) & effort (E) in the 3rd class lever system?
F- either ends, R- either sides, E- in the centre
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what is the function of the 1st class lever system?
to increase the speed if an object
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what is the function of the 2nd class lever system?
to overcome heavy loads
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what is the function of the 3rd class lever system?
to increase speed or distance
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what is the effort arm and resitance arm?
effort arm- distance between effort & fulcrum. resistance arm- distance between resistance & fulcrum
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what is an example of a 1st class lever?
throwing and javelin/ball
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what is an example of a 2nd class lever?
jumping off the toes
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what is an example of a 3rd class lever?
upwards phase of a bicep curl
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Other cards in this set

Card 2

Front

what are the axis of the body?

Back

horizontal, frontal, longitudinal

Card 3

Front

what axis goes with what planes?

Back

Preview of the front of card 3

Card 4

Front

what movement occurs at the sagittal plane?

Back

Preview of the front of card 4

Card 5

Front

what movement occurs at the frontal plane?

Back

Preview of the front of card 5
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