Section 8

Question 1

Biomechanics

Answer 1

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

Question 2

Mechanics

Answer 2

Study of physical actions of forces.

Question 3

Mechanics divided into

Answer 3

Statics and dynamics

Question 4

Machines of body

Answer 4

Levers,wheels/axels,pulleys

Question 5

Use of machines of body

Answer 5

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

Question 6

Mechanical advantage

Answer 6

Small force applied to move much greater resistance

Question 7

Mechanical advantage

Answer 7

Load (resistance)/ Effort (Force)

Or length of force arm/length of resistance arm

Question 8

Leverage

Answer 8

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

Question 9

Machines function to

Answer 9

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

Question 10

Lever

Answer 10

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

Question 11

Three point of a lever are:

Answer 11

Force
Axis
Resistance

Question 12

Axis

Answer 12

Pout of rotation (joint) about which lever moves

Question 13

Force

Answer 13

Point of force application (usually muscle insertion)

Question 14

Resistance

Answer 14

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

Question 15

Center of gravity

Answer 15

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

Question 16

Location of an external resistance

Answer 16

.

Question 17

1st class 
BAlanced movement

Answer 17

Axis midway btwn force and resistance

Question 18

1st class 
Speed and rom

Answer 18

Axis close to force

Question 19

1st class 
Force

Answer 19

Axis close to resistance

Question 20

First class lever

Answer 20

Axis between force an resistance

Question 21

Second class lever

Answer 21

Resistance between axis and force

fOrCe

Question 22

Third class

Answer 22

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

Question 23

Torque

Answer 23

Turning effect of eccentric force

Question 24

Eccentric force

Answer 24

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

Question 25

Torque

Answer 25

Multiplying amt of force by force arm

Question 26

Force arm

Answer 26

Dist between location of force and axis

Question 27

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

Answer 27

Force arm, torque

Question 28

MFA

Answer 28

Dist between axis and point if m attachment

Question 29

Resistance arm

Answer 29

Dist btwn axis and point of resistance application

Question 30

RFA

Answer 30

Dist between axis, and center if gravity of distal segment

Question 31

1n

Answer 31

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

Question 32

1 n = ______ lb

Answer 32

.225

Question 33

Lever equation

Answer 33

F x Fa = R x RA

Question 34

EMF

Answer 34

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

Question 35

ERF

Answer 35

Effective Resistive Force | RF (n) x RFA (m) x sinAR

Question 36

Wheels and axels

Answer 36

Enhance speed and ROM. In musculoskeletal system