Recognition: Muscles

V. 38

extend

increase the angle between two bones

rotate

turn a body part around its own axis;(turning head from side to side)

flex

decrease the angle between two bones

contract

to make the muscle short and thick, which causes movement

extend

to stretch the muscle

skeletal muscle

is attached to bones and causes body movement

tendons

strong tough fibrous connective-tissue cord

atrophy

shrink in size and lose strength

muscle spasms

or cramps are sudden, painful involutary muscle contractions

strain

is an overstrecting of or injury to a muscle and/ or tendon