muscular system (test 2)

orgin of a muscle

the muscle’s attachment to an immovable or less movable bone

insertion of a muscle

the muscle’s attachment to a movable bone

flexion movement

a bending movement that decreases the angle of the joint

extension movement

a straightening movement that increases the angle of the joint

rotation movement

a movement around its longitudinal axis

abduction movement

moving the limb away from the midline

adduction movement

moving the limb towards the midline

circumduction movement

when the proximal end of the bone is stationary and the distal end moves in a circle

dorsiflexion movement

standing on heels

plantar flexion movement

pointing toes

inversion movement

the act of turning the foot medially

eversion movement

the act of turning the foot laterally

supination movement

when the palms of the hands face anteriorly

pronation movement

when the palms of the hand face posterior

opposition movement

the movement of our thumbs

prime mover muscle

the muscle with the majority of the responsibility of movement

antagonist muscle

the muscle that opposes a prime mover

synergist muscle

the muscle that assists the prime movers and prevents rotation

fixator muscle

the muscle that stabilizes the orgin of a prime mover

rectus

muscle fibers are straight and parallel to the muscle’s long axis

transverse

muscle fibers are perpendicular to the muscle’s long axis

oblique

muscle fibers are diagonal

maximus

largest muscle

minimis

smallest muscle

vastus

huge muscle

longus

longest muscle

brevis

short muscle

major

large muscle

minor

small muscle

supra

above a certain bone

infra

below a certain bone

sub

underneath a certain bone

bi

muscle has 2 orgins

tri

muscle has 3 orgins

quad

muscle has 4 orgins

deltoid

muscle is in the shape of a triangle

latissimus

muscle has a wide shape

trapezius

muscle is in the shape of a trapezoid

teres

muscle has a round shape

orbicularis

muscle is in the shape of a circle

frontalis

frontalis muscle insertion

inserts to the skin of eyebrow

occipitalis

orbicularis oculi

orbicularis oris

buccinator

zygomaticus

masseter

temporalis

platysma

sternocleidomastoid

muscle that allows us to raise our eyebrows

frontalis

muscle that pulls scalp posterior

occipitals

muscle that allows us to blink

orbicularis oculi

muscle that allows us to pucker our lips

orbicularis oris

muscle that flattens the cheek and keeps food in mouth

buccinator

three chewing muscles

buccinator, masseter and temporals

muscle that allows us to smile

zygomaticus

prime mover for jaw closure

masseter

synergist in jaw closure

temporalis

muscle that provides the natural sag of the mouth

platysma

muscle that allows for head flex and rotation

sternocleidomastoid