Levers, Planes and Axes Flashcards

1
Q

Which class of lever is the Diagram?

A

1st Class

Fulcrum is in the middle

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2
Q

During Plantarflexion of the ankle, what class of lever is being used?

A

2nd Class

Resistance is in the middle

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3
Q

What does a third Class lever look like?

A
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4
Q

How do you work out mechanical advantage?

A

Effort arm / resistance arm

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5
Q

What is the benefit of a lever system of having a short effort arm?

A

Gives rapid movements over a large range of movement

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6
Q

What is the benefit of a lever system of having a short resistance arm?

A

Able to move a heavy weight

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7
Q

Complete this:

1 F T/Neck

2 _ G

_ E _

A

1 F TRICEP/NECK

2 L GASTROCNEIMUS

3 E BICEP/ANY OTHER MUSCLE

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8
Q

What do you understand by the term ‘Antagonistic muscle action’

A

As one muscle contracts the second relaxes

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9
Q

Define Isotonic muscle contraction

A

Muscle action where the muscle changes length - causing movement

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10
Q

Define Isometric muscle contraction

A

Muscle action where the muscle stays the same length - used in balances e.g. the plank/headstand

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11
Q

Define concentric muscle contraction

A

Isotonic muscle contraction where the muscle shortens

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12
Q

Define eccentric muscle contraction

A

Isotonic contraction where the muscle lengthens - used to control downward movements

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13
Q

Which plane is this?

A

Sagittal

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14
Q

What does the Transverse plane divide the body into?

A

Top and Bottom

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15
Q

Which plane is this?

A

Frontal

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16
Q

Can you name the 3 axis through the body?

A