intro muscular

origin

where the muscle originates; immovable

insertion

where the muscle ends; insertion moves towards the origin

agonist

the primary muscle performing movement

antagonist

opposing muscle of the agonist

synergist

secondary muscles that work with the agonist to perform movement

flexion

decreases the angle of the joint

extension

increases the angle of the joint

abduction

movement along the frontal plane, away from midline

adduction

movement along frontal plane, toward the midline

inversion

Turning the sole of the foot inward

eversion

turning the sole of the foot outward

lateral flexion

Side-bending left or right

rotation

Twisting motion towards or away from the midline

flexion of the trunk

Bending forward at the waist.

extension of the trunk

bending backwards

abdominis

abdomen

brachium

arm

femoris

thigh

gluteus

buttock

pectoralis

chest

tibialis

tibia or crural

brevis

short

longus

long

maximus

largest

minimus

smallest

deltoid

triangular

trapezius

trabezoid

piriformis

pear shaped

rectus

straight or parallel

transverse

at right angles or perpendicular

oblique

slanted

bi

two

tri

three

quad

four

-ceps

head

extensor

to spread or stretch to open an angle

flexor

to bed a body part to close an angle

abductor

to spread away from the midline of the body

adductor

to move toward the midline of the body