levers, planes, axis + drugs

Question 1

what is a plane

Answer 1

an imaginary line dividing the body in two

Question 2

what is a frontal plane

Answer 2

divides the body vertically into front and back - like a sheet of glass infront and behind you

Question 3

what movement does a frontal plane allow

Answer 3

sideways movements e.g cartwheel

Question 4

what is a sagittal plane

Answer 4

divides body vertically into left and right - like a sheet of glass either side

Question 5

what type of movement does a sagittal plane allow

Answer 5

front and back movement e.g forwards roll

Question 6

what is a transverse plane

Answer 6

divides body horizontally to top and bottom - like a sheet of glass above and below you

Question 7

what type of movement does a transverse plane allow

Answer 7

twisting movement e.g full twist

Question 8

what is an axis

Answer 8

an imaginary line in which the body or body parts turn

Question 9

what is a vertical axis

Answer 9

a line from top to bottom

Question 10

what type of movement does a vertical axis allow

Answer 10

twisting movement e.g full twist

Question 11

what is a frontal axis

Answer 11

a line from side to side

Question 12

what type of movement does a frontal axis allow

Answer 12

forwards and backwards movement e.g forwards roll

Question 13

what is a sagittal axis

Answer 13

a line from front to back (through belly button)

Question 14

what type of movement does a sagittal axis allow

Answer 14

sideways movement e.g cartwheel

Question 15

what planes and axis go together

Answer 15

frontal axis and sagittal plane
sagittal axis and frontal plane
vertical axis and transverse plane

Question 16

what do levers allow

Answer 16

they allow the body to make physical work easier e.g lifting heavy loads

Question 17

what is a lever

Answer 17

a rigid bar that moves around a fixed point (pivot) with two forces applied (load and effort)

Question 18

what is a fulcrum / pivot

Answer 18

a fixed point

Question 19

what is an effort

Answer 19

a source of energy to do work

Question 20

what is a load

Answer 20

the weight / resistance to be moved

Question 21

what is a first class lever

Answer 21

like a see-saw
pivot on the middle with effort on one side and load on the other

Question 22

first class levers in the body (inc. pivot, load and effort)

Answer 22

lifting head (pivot - vertabrae, load - head, effort - trapezius)
tricep dip (pivot - elbow, load - hand, effort - where the tricep attaches to the elbow)
only at the neck and elbow extension

Question 23

what is a second class lever

Answer 23

like a wheel barrow
pivot at one end then the load in the middle going down and the effort at the other end going up

Question 24

second class levers in the body (inc. pivot, load and effort)

Answer 24

plantar flexion (pivot - toes, load - body weight, effort - gastrocnemius)
only place

Question 25

what is a third class lever

Answer 25

like pulling in a heavy place
pivot at one end, effort in the middle going up and load at the other end going down

Question 26

third class levers in the body (inc. pivot, load and effort)

Answer 26

bicep curl (pivot - elbow, load - hand, effort - where bicep attaches to radius and ulna)
all other places in the body

Question 27

what is a mechanical advantage

Answer 27

if the effort arm is longer than the load arm as it doesn’t require a lot of effort to move the load but you don’t get much force created

Question 28

what is a mechanical disadvantage

Answer 28

if the load arm is longer than the effort arm as it requires more effort to move the load however the force created is greater
third class lever is always a mechanical disadvantage