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PE > Section Two - Topic 2 > Flashcards

Section Two - Topic 2 Flashcards

1
Q

What do the muscular and skeletal systems create when they work together?

A

Lever systems that help us to move

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2
Q

What’s a lever

A

A solid bar that moves about a fixed point when force is applied to it

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3
Q

What used the body part as a lever

A

When a muscle pulls on a bone to move a body part about a joint

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4
Q

What are the four components making up a lever system

A

Lever arm
Effort
Fulcrum
Load

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5
Q

What’s the lever arm

A

The bone or body part being moved about a point

Straight line

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6
Q

What’s the effort

A

The force applied by the muscles to the lever arm

Arrow pointing in direction of force

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7
Q

What’s the fulcrum

A

The joint where the lever arm pivots

Triangle

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8
Q

What’s the load

A

The resistance against the pull of muscles on the lever arm eg weigh or body part or something being lifted

A square

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9
Q

1 2 3

A

F L E

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10
Q

1st class lever system

A

Load and effort are at opposite ends

Fulcrum I nmiddle

Tilting head back (first thing u do when born)

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11
Q

2nd class lever

A

Fulcrum and effort at opposite ends

Load in middle

Standing on toes (second thing you’d do)

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12
Q

3rd class lever system

A

The fulcrum and load at opposite ends
Effort in middle

Flexion at elbow

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13
Q

Most common lever system

A

Third

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14
Q

Which lever systems are there not many of?

A

First class

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15
Q

What do levers help the body do?

A

Use its muscles effectively - different levers have different benefits -

Some help heavier loads while others increase the speed of a load can be moved at or the range of movement

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16
Q

What can a lever in the body with a mechanical advantage do?

A

Move a large load
Small effort from muscles

However

Only move load short distances
Low speeds

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17
Q

Definition for mechanical advantage

A

If the distance from the fulcrum to the effort is greater than the distance from the fulcrum to the load, the lever has a mechanical advantage

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18
Q

Do second class levers always have a mechanical advantage or disadvantage?

A

Always has a mechanical advantage

The effort is always further from the fulcrum than the load is

19
Q

A first class lever has a mechanical advantage is the …

A

Fulcrum is closer to the load than it is to the effort

20
Q

A lever with a mechanical disadvantage requires …

A

A large effort from muscles
To move a small load

However

Moves load quickly
Through large range of movement

21
Q

Third class levers always have a mechanic advantage or disadvantage?

A

Disadvantage

The distance from the fulcrum to the effort is always less than the distance from the fulcrum to the load

22
Q

When does a first class lever have a mechanical disadvantage?

A

If the fulcrum is closer to the effort than it is to the load

23
Q

How can u describe body movement

A

Using the plane isn’t moves in

Axis it moves around

24
Q

What’s a plane of movement?

A

An imaginary flat surface which runs through the body

25
Q

What are planes used to describe?

A

The direction of movement

26
Q

What are the three planes of movement

A

Sagittal plane
Transverse plane
Frontal plane

27
Q

What does the sagittal plane do

A

Divided body into left and right sides

28
Q

Transverse plane

A

Divided body into top and bottom

29
Q

Frontal plane

A

Body into front and back

30
Q

What’s an axis of movement

A

An imaginary line which runs through the body

31
Q

Three type of axis

A

Sagittal
Frontal
Vertical

32
Q

Sagittal axis

A

Runs through body from front to back

33
Q

Frontal axis

A

Runs through body from left to right

34
Q

What’s vertical axis

A

Runs through body from top to bottom

35
Q

Sagittal plane goes with

A

Frontal axis

36
Q

Frontal plane goes with

A

Sagittal axis

37
Q

Transverse plane goes with

A

Vertical axis

38
Q

Movement type with sagittal plane and frontal axis

A

Flexion/extension

39
Q

Movement type with frontal plane and sagittal axis

A

Adduction/abduction

40
Q

Movement type of transverse plane and vertical axis

A

Rotation

41
Q

Sport movement with sagittal plane and frontal axis

A

Tucked and piked somersaults

42
Q

Sport movement with frontal plane and sagittal axis

A

Cartwheel

43
Q

Sport movement with transverse plane and vertical axis

A

Full twist jump (trampoline)

PE (14 decks)

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