Muscle Man pt. 1
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| Temporalis | fan shaped muscle overlying the temporal bone. It inserts into the mandible & acts as a synergist of the masseter in closing the jaw
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| masseter | runs from the zygomatic process of the temporal bone to the mandible, it covers the angle of the lower jaw. This muscle closes the jaw by elevating the mandible
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| frontalis | coves the frontal bone, runs from the cranial aponeurosis to the skin of the eyebrows, where it inserts. This muscle allows you to raise your eyebrows and to wrinkle your forehead
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| orbicularis oculi | has fibers that run in circles around the eyes. It allows you to close your eyes, squint, blink, and wink
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| zygomaticus | extends from the corner of the mouth to the cheekbone. Often referred to as the "smiling" muscle because it raises the corners of the mouth upward
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| orbicularis oris | circular muscle of the lips. Because it closes the mouth and protrudes the lips, it is often called the "kissing" muscle
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| buccinator | runs horizontally across the cheek and inserts into the orbicularis oris. It flattens the cheek when you whistle. It is also a chewing muscle because it compresses the cheek to hold the food between the teeth during chewing
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| occipitalis | covers the posterior aspect of the skull and pulls the scalp posteriorly
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| sternocleidomastoid | paired muscle that are found on each side of the neck. The muscle has two heads: one arises from the sternum and the other from the clavicle. Often called the "prayer" muscle because it allows you to bow your head
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| trapezius | most superficial muscles of the posterior neck and upper trunk. Runs from the occipital bone down the vertebrae. They then flare laterally to insert on the scapular spine and clavicle. They form a diamond shaped or kite shaped muscle mass.
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| platysma | a single sheetlike muscle that covers the neck. It originates from the connective tissue covering the chest muscles and inserts into the area around the mouth. It pulls the corners of the mouth inferiorly. "sad" face
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| deltoid | triangle shaped muscle that form the rounded shape of your shoulders. They are bulky and a favorable area for a shot. The are prime movers of the arm
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| latissimus dorsi | two large, flat muscles that cover the lower back
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| pectoral minor | a thin, flat muscle found under pectoralis major muscle. This muscle extends from 3 origins on the third, fourth, and fifth ribs on each side of the ribcage. Aids in lifting the rib cage and in movement of the scapula
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| pectoralis major | large fan shaped muscle covering the upper part of the chest. Originates from the sternum, shoulder girdle, and the first 6 ribs. It inserts on the proximal end of the humerus. It acts to adduct and flex the arm
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| serratus anterior | muscle that originates on the top surface of the eight or nine upper ribs. The muscle inserts exactly at the front border of the scapula, or shoulder blade.
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| intercostals | deep muscles found between the ribs. Important in breathing because they help raise the rib cage when you inhale.
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Created by:
kajones97
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