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Kineseology/Biomechanics > Section 8 > Flashcards

Section 8 Flashcards

1
Q

Biomechanics

A

Study of mechanics as relates to functional and anatomical analysis of biological systems

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2
Q

Mechanics

A

Study of physical actions of forces.

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3
Q

Mechanics divided into

A

Statics and dynamics

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4
Q

Machines of body

A

Levers,wheels/axels,pulleys

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5
Q

Use of machines of body

A

Used to increase/multiply applied force (muscular contraction) in performing (cause,control,prevent) a task

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6
Q

Mechanical advantage

A

Small force applied to move much greater resistance

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7
Q

Mechanical advantage

A

Load (resistance)/ Effort (Force)

Or length of force arm/length of resistance arm

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8
Q

Leverage

A

Describes Mechanical advantage that a force can have when moving an object

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9
Q

Machines function to

A

Balance multiple forces, enhance force,enhance rom and speed of movement, alter resulting direction of an applied force

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10
Q

Lever

A

A rigid bar that turns around an axis of rotation /fulcrum

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11
Q

Three point of a lever are:

A

Force
Axis
Resistance

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12
Q

Axis

A

Pout of rotation (joint) about which lever moves

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13
Q

Force

A

Point of force application (usually muscle insertion)

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14
Q

Resistance

A

Point of resistance application which is either : center of gravity or location of an external resistance

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15
Q

Center of gravity

A

Point at which all body’s or limbs mass and weight is equally distributed in all directions

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16
Q

Location of an external resistance

A

.

17
Q 
1st class 
BAlanced movement
A

Axis midway btwn force and resistance

18
Q 
1st class 
Speed and rom
A

Axis close to force

19
Q 
1st class 
Force
A

Axis close to resistance

20
Q

First class lever

A

Axis between force an resistance

21
Q

Second class lever

A

Resistance between axis and force

fOrCe

22
Q

Third class

A

Force between axis and resistance
Speed and rom
Most are this type

23
Q

Torque

A

Turning effect of eccentric force

24
Q

Eccentric force

A

Force applied in direction not in line w/center or rotation of obj w/fixed axis

25
Q

Torque

A

Multiplying amt of force by force arm

26
Q

Force arm

A

Dist between location of force and axis

27
Q

The greater the distance of ________,the more ______ produced by force.

A

Force arm, torque

28
Q

MFA

A

Dist between axis and point if m attachment

29
Q

Resistance arm

A

Dist btwn axis and point of resistance application

30
Q

RFA

A

Dist between axis, and center if gravity of distal segment

31
Q

1n

A

Force required to accelerate a mass of one kg one meter per second squared

32
Q

1 n = ______ lb

A

.225

33
Q

Lever equation

A

F x Fa = R x RA

34
Q

EMF

A

Effective muscular force- MF (n) x MFA (m) x sin AMP

35
Q

ERF

A

Effective Resistive Force

RF (n) x RFA (m) x sinAR

36
Q

Wheels and axels

A

Enhance speed and ROM. In musculoskeletal system

Kineseology/Biomechanics (5 decks)

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