Muscles Of Upper Limb

Front 1

attachment point of muscle that does not move during contraction, also called proximal attachment

Back 1

origin

Front 2

attachment that moves during contraction, also called distal attachment

Back 2

insertion

Front 3

effects muscle has on part of body

Back 3

action

Front 4

when muscle contracts, it shortens, bringing insertion closer to origin.
contraction may also mean that muscle is producing internal tension w/o shortening

Back 4

action

Front 5

muscle that has main force on joint

Back 5

prime mover

Front 6

muscles that assist prime mover; modifies direction of movement that occurs

Back 6

synergist

Front 7

muscles that oppose (move the bones in opposite direction) of prime mover; preventing excessive movement and injury

Back 7

antagonist

Front 8

to prevent motion in either direction by contraction of prime movers and antagonists at same time; prevents movement of bone that prime mover is attached to

Back 8

fixing (fixator)

Front 9

types of muscle contraction

Back 9

isometric
isotonic --> concentric and eccentric

Front 10

contraction w/o change in length

Back 10

isometric

Front 11

contraction w/ change in length, but no change in tension

Back 11

isotonic

Front 12

muscle shortens as maintains tension

Back 12

concentric

Front 13

muscle lengthens as maintains tension

Back 13

eccentric