chapter 2

Question 1

what are 3 components of a lever

Answer 1

fulcrum
resistance
effort

Question 2

whats the fulcrum

Answer 2

• pivots
• joints are the fulcrum in the bodies lever system

Question 3

whats the resistance

Answer 3

• load to be moved by a lever system
• usually involves weight

Question 4

whats the effort

Answer 4

• force thats applied to the resistance
• provided by the muscles exerting a force

Question 5

where is the 1st class lever system found

Answer 5

elbow joint where the tricep causes extension in the lower arm

Question 6

whats the simplest lever system

Answer 6

1st class lever system

Question 7

in a 1st class lever system is the effort pointing up or down

Answer 7

down

Question 8

whats in the middle of a 1st class lever system

Answer 8

fulcrum

Question 9

does a 1st class lever system have high or low mechanical advantage

Answer 9

both

Question 10

where is the 2nd class lever system found

Answer 10

at the ankle joint where the gastrocnemius causes plantar flexion

Question 11

whats in the middle of a 2nd class lever system

Answer 11

resistance

Question 12

does a 2nd class lever system have high or low mechanical advantage

Answer 12

high
(can move heavy loads with little effort)

Question 13

where is the 3rd class lever system found

Answer 13

majority of bodies joints

Question 14

whats in the middle of a 3rd class lever system

Answer 14

effort

Question 15

whats the most common lever system

Answer 15

3rd class lever system

Question 16

whats the formula for mechanical advantage

Answer 16

effort arm / resistance arm

Question 17

what is the mechanical advantage

Answer 17

it measures the efficiency of a lever

Question 18

does a 3rd class lever system have high or low mechanical advantage

Answer 18

low (can move quickly over a large range of movement)

Question 19

whats a plane

Answer 19

imaginary line that splits the body in two and depicts the direction of movement

Question 20

what are the 3 planes

Answer 20

frontal
sagittal
transverse

Question 21

whats an axis

Answer 21

imaginary line that the body rotates around

Question 22

what are the 3 axes

Answer 22

sagittal
transverse
longitudinal

Question 23

where does the frontal plane cut the body

Answer 23

left to right

Question 24

what movement is a frontal plane

Answer 24

abduction, adduction
(side to side)

Question 25

where does the transverse plane cut the body

Answer 25

top and bottom

Question 26

what movement is a transverse plane

Answer 26

rotation

Question 27

where does the sagittal plane cut the body

Answer 27

through the body into left and right

Question 28

what movement is a sagittal plane

Answer 28

flexion, extension

Question 29

where does the sagittal axis cut the body

Answer 29

back to front

Question 30

where does the transverse axis cut the body

Answer 30

left to right

Question 31

where does the longitudinal axis cut the body

Answer 31

top to bottom

Question 32

transverse plane goes with

Answer 32

longitudinal axis

Question 33

frontal plane goes with

Answer 33

sagittal axis

Question 34

sagittal plane goes with

Answer 34

transverse plane

Question 35

sporting examples of sagittal plane

Answer 35

- running - kicking a football

Question 36

sporting examples of frontal plane

Answer 36

- cartwheel - goalkeeper save

Question 37

sporting examples of transverse plane

Answer 37

- ballet dancing