biomechanics of muscles

vastus

huge

maximus

large

longus

long

minimus

small

brevis

short

deltoid

triangular in shape

rhomboid

rhomboid in shape has equal and parallel sides

latissimus

wide in shape

teres

round in shape

trapezius

like a trapezoid a four sided figure with two parallel sides

rectues

straight in direction

transverse

spans across in direction

oblique

diagonally across in direction

orbicularis

circular in direction

pectoris

chest

gluteus

buttock or rump

brachii

arm

supra

above

infra

below

sub

underneath or below

lateralis

lateral

biceps

two heads

triceps

three heads

quadriceps

four heads

 sternocleidomastoideus (

origin on the sternum and clavicle, insertion on the mastoid process

brachioradialis

origin on the brachium or arm, insertion on the radius