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Muscular System
Muscles
Question | Answer |
---|---|
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 |