Elements Of Biomechanics-levers Flashcards Preview

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Flashcards in Elements Of Biomechanics-levers Deck (29)
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1

Describe biomechanics

▪️Part of biophysics which studies - the mechanical properties of living tissues and organs -the mechanical phenomena taking place in the body as a whole and in the organs -musculoskeletal system as a set of linked levers and the forces applied to the levers

2

What are degrees of freedom?

•A set of independent displacements and/or rotations that specify the displaced position and orientation of the system •The number of degrees of freedom of a body is equal to the number of independent displacements and rotations of the body

3

Give a degrees of freedom example of an unobstructed rigid body

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4

Give a degrees of freedom example of an unobstructed material point

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5

Give a degrees of freedom example of a rigid body which can only rotate around a fixed axis

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6

Give a degrees of freedom example of two material points with a rigid connection between them

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7

The joints of the musculoskeletal system

•The elements of a mechanism are connected to each other at the joints -can be fixed or kinematic(movable) •Bones of the human skeleton are connected to other bones at fixed or kinematic joint

8

Give an overview of a single axis two link system

9

Give an overview of a single axis 3 link system

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10

Give an overview of a double axis two link system

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11

Give an overview of a triple axis two linked system

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12

Briefly describe the levers in the human body

•Musculoskeletal system consists of bones connected to each other at joints and muscles attached to the bones by tendons

13

Give an overview of the lever

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14

Give an overview of the equilibrium condition

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15

First class lever

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16

Second class lever

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17

Third class lever

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18

Work accomplished by levers

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19

Give a first class lever example

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20

Give a Second class lever example

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21

Give a third class lever example

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22

Describe the action of the muscle effort

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23

Describe movement of the body

•The muscles are the active component of the musculoskeletal system - They contract and apply effort to the skeletal bones causing them to move -Results in movement of parts of the body

24

What are the types of muscle contraction?

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25

Describe work and power

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26

Describe dynamic work of the muscles

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27

Describe dynamic power

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28

Describe static(postural) work

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29

Describe the equilibrium of the body

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