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Muscular System


Covers, shapes, and supports the skeletal tissue; contracts and moves parts of the body muscular system
Study of structure, function, and diseases of the muscles myology
Attached to bones and are voluntary controlled; assist in maintaining posture and protect internal organs striated muscles
Involuntary muscles nonstriated muscles
Muscle found only in the heart cardiac muscle
Broad muscle that covers top of the skull epicranius (occipito-frontalis)
Back of the epicranius; muscle that draws the scalp backwards occipitalis
Anterior portion of the epicranius; muscle of the scalp that raises the eyebrows, draws the scalp forward, and causes wrinkles across the forehead frontalis
Tendon that connects the occipitalis and frontalis epicranial aponeurosis
Muscle above the ear auricularis superior
Muscle in front of the ear auricularis anterior
Muscle behind the ear auricularis posterior
Muscles for chewing masseter and temporalis
Broad muscle extending from the chest and shoulder muscles to the side of the chin; responsible for lowering the lower jaw and lip platysma muscle
Muscle of the neck that lowers and rotates the head sternocleidomastoideus
Muscle located beneath the frontalis and orbicularis oculi that draws the eyebrow down and wrinkles the forehead vertically corrugator muscle
Ring muscle of the eye socket; enables closing of the eyes orbicularis oculi
Covers the bridge of the nose, lowers the eyebrows, and causes wrinkles across the bridge of the nose procerus
Thin, flat muscle of the cheek between the upper and lower jaw that compresses the cheeks and expels air between the lips buccinator muscle
A muscle surrounding the lower lip; lowers the lower lip and draws it to one side depressor labii inferioris (quadratus labii inferioris)
A muscle that raises the angle of the mouth and draws it inward levator anguli oris (caninus)
Muscle that elevates the lower lip and raises and wrinkles the skin of the chin mentalis
Flat band around the upper and lower lips that compresses, contracts, puckers, and wrinkles the lips orbicularis oris
Muscle of the mouth that draws the corner o the mouth out and back, as in grinning risorius
Muscle extending alongside the chin that pulls down the corner of the mouth triangularis
Muscles extending from the cheekbone to the angle of the mouth; elevate the lip zygomaticus
Broad, flat superficial muscle covering the lower region of the back latissimus dorsi
Muscles of the chest that assist the swinging movements of the arm pectoralis major
Muscle of the chest that assists in breathing and in raising the arm serratus anterior
Muscle that covers the back of the neck and upper and middle region of hte back; rotates and controls swinging movements of the arm trapezius
Muscle producing the contour of the front and inner side of the upper arm; they lift the forearm and flex the elbow bicep
Large, triangular muscle covering the shoulder joint that allows the arm to extend outward and to the side of the body deltoid
Large muscle that covers teh entire back of the upper arm and extends the forearm tricep
Muscles that straighten the wrist, hand, and fingers to form a straight line extensors
Extensor muscles of the wrist, involved in bending the wrist flexors
Muscles that turn the hand inward so that the palm faces downward pronators
Muscle of the forearm that rotates the radius outward and the palm upward supinator
Muscles that separate the fingers abductors
Muscles that draw the fingers together adductors
Bends the foot up and extends the toes extensor digitorum longus
Covers the front of the shin; bends foot upward and inward tibialis anterior
Covers the outer side of the calf and inverts the foot and turns it outward peroneus longus
Originates on the lower surface of the fibula; bends the foot down and out peroneus brevis
Attached to lower rear surface of the heel and pulls the foot down gastrocnemius
Originates at the upper portion of the fibula and bends the foot down soleus
Muscles of the feet extensor digitorum brevis, abductor hallucis, flexor digitorum brevis, and abductor
Created by: fjelstadka