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Rehab Biomechanics > Test 1 > Flashcards

Test 1 Flashcards

1
Q

What kind of approach is biomechanics?

A

A multidisciplinary approach

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2
Q

The study of the structure of the body

A

Anatomy

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3
Q

More advantageous muscle insertion means there will be more

A

Torque

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4
Q

What is cartilage there for?

A

It’s force absorption capabilities

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5
Q

Body’s resistance to angular acceleration

A

Moment of Inertia

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6
Q

If something is farther away from it’s center of mass will this make moving easier or more difficult?

A

More difficult

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7
Q

The patella increases what?

A

Quadriceps torque

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8
Q

What is unique about the achilles tendon?

A

Humans have this but primates do not

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9
Q

The study of the function of the body

A

Physiology

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10
Q

Rapidly contract but not good at utilizing oxygen

A

Fast twitch muscle fibers

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11
Q

The study of the neuromuscular mechanisms involved in the facilitation of movement

A

Motor control

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12
Q

Production of force depends on:

A

recruitment, rate coding, muscle firing patterns, fiber type

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13
Q

When muscles are fatigued, what muscle firing patterns do they have?

A

Synchronous

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14
Q

Study of motor behavior across the lifespan

A

Motor development

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15
Q

Where on the body should COG be for someone to be most stable?

A

Lower parts

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16
Q

The study of the acquisition and refinement of motor skills

A

Motor learning

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17
Q

The study of human behavior

A

Psychology

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18
Q

The study of the biochemical nature of genes and heredity

A

Genetics

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19
Q

Measurement and description of the physical components of the body

A

Anthropometrics

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20
Q

The study that makes environments safer. OTs work a lot with this.

A

Ergonomics

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21
Q

Formula for force?

A

Force= mass times acceleration

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22
Q

What causes a change in the state of motion of an object

A

Force

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23
Q

Forces affecting movement

A

Kinetics

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24
Q

The study of time and space characteristics of movement

A

Kinematics

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25
Q

amt. of electrical activity in a muscle

A

Electromyography

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26
Q

Amount of force that is present is measured with a

A

Force platform

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27
Q

This records movement through the use of reflective markers

A

Motion analyzer

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28
Q

Body’s resistance to change in motion

A

Inertia

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29
Q

Curved path?

A

Centripetal

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30
Q

Straight line?

A

Centrifugal

31
Q

Acceleration formula?

A

Force= mass X acceleration

32
Q

Momentum formula?

A

Mass X Volume

33
Q

Newton’s Third Law

A

Law of Action: Action= equal and opposite reaction

34
Q

A body’s resistance to a chance in angular acceleration

A

Moment of inertia

35
Q

Moment of inertia formula

A

Mi= m X k^2

36
Q

Do LONG sarcomeres increase or decrease speed?

A

Increase speed

37
Q

LOW moment of inertia.. increase or decrease speed?

A

Increase speed

38
Q

Impulse/Momentum formula

A

Ft= m(Vi)

39
Q

Falling bodies formula

A

1/2(g) X t^2

40
Q

Instantaneous Velocity

A

gt

41
Q

Force absorption becomes more efficient if we ______ the time and _____ the surface area

A

Increase; increase

42
Q

An object will continue to accelerate in a free fall until what is reached?

A

Terminal Velocity

43
Q

The lower the CG, the…

A

more stable.

44
Q

The larger the base of support, …

A

the more stable.

45
Q

The heavier the object, …

A

the more stable.

46
Q

Do friction and surface area correlate with one another?

A

No. They are said to be independent of one another.

47
Q

What kind of fluid lubricates articulation surfaces and is absorbed by and coats cartilage?

A

Synovial fluid

48
Q

Sacs that tendon, ligament and muscle come in contact with boney protuberances and reduce friction

A

Bursae

49
Q

Skeletal muscles only produce a ______. They never _____.

A

Pull; push

50
Q

Each muscle fiber is innervated by a ____?

A

Motor nerve

51
Q

____ affect the activity within the neuromuscular junction.

A

Toxins

52
Q

Muscle shortens while creating a force

A

Concentric

53
Q

Muscle lengthens while creating a force

A

Eccentric

54
Q

The speed of the muscle contraction is regulated by a machine

A

Isokinetic

55
Q

The resistant force is regulated to match the muscle torque throughout the range of motion

A

Isoinertial

56
Q

Resistant torque and effort torque vary through the range of motion

A

Isotonic

57
Q

Muscle length remains constant while creating a force

A

Isometric

58
Q

Most muscles work best at 100%-120% their resting length

A

Length-tension

59
Q

The greater the load, the slower the shortening or lengthening

A

Load-velocity

60
Q

A forced, limited pre-stretch can produce increases in force

A

Pre-stretching

61
Q

Increase in contraction velocity and increase in enzyme activity

A

Increased temperature

62
Q

Slow Twitch Oxidative

A

Type 1

63
Q

Fast twitch and moderate aerobic and anaerobic capacities

A

Type 2A

64
Q

Fast twitch anaerobic

A

Type 2B

65
Q

Oblique fiber pattern that is good for strength

A

Pennate

66
Q

Fibers run in line with the line of pull. Good for speed.

A

Nonpennate

67
Q

The muscle or muscle group doing the work

A

Agonist

68
Q

The muscle or muscle group that produces the opposite movement of the agonist contraction

A

Antagonist

69
Q

Muscles attach to _____

A

Bones

70
Q

Joints serve as _______

A

Axes of rotation

71
Q

Formula for Mass

A

Weight/Gravity

72
Q

Pressue formula

A

F/A

73
Q

Centripetal Force formula

A

Fc=M x V^2/r

Rehab Biomechanics (1 decks)

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