study guide
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| a muscle that enables you to shrug your shoulders or extend your head | trapezius
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| a muscle that adducts the shoulder and causes extension of the shoulder joint | latissimus dorsi
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| the shoulder muscle that is the antagonist of the muscle described in question 2 above | deltoid
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| prime mover of back extension; a composite muscle consisting of three columns | erector spinea
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| a fleshy muscle forming part of the posterior abdominal wall that helps to maintain upright posture | quadratus lumborum
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| acting individually small rectangular muscles that rotate the glenoid cavity of the scapulae inferiorly | romboids
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| synergist of the trapezius in scapular elevation; acts to flex the head to the same side | levator scapulae
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| synergist of latissimus dorsi in extension and adduction of humerus | teres major
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| a rotator cuff muscle; prevents downward dislocation of the humerus | supraspinatus
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| a rotator cuff muscle; rotates the humerus laterally | infraspinatus
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| a rotator cuff muscle; lies immediately inferior to the infraspinatus | teres minor
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| muscle that holds the scapula tightly against the thorax wall | serratus anterior
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| kite-shaped muscle pair that elevates, stabilies and depresses the scapulae | trapezius
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| small rectangular muscles that squarethe shoulders as they act together to retract the scapula | rhomboids
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| small muscle pair that elevates the scapulae | levator scapulae
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| two paired muslces forming the bulk of the pelvic diaphram | coccygeus, levator ani
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| muscles that form the urogenital diaphragm | deep transverse perineal muscle, external urethral sphincter
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| muscles forming the superficial space | bulbospongiosus, ischiocavernosus, superficial transverse perineal muscle
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| a muscle that constricts the urethra | external urethral sphincter
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| empties the uretra assists in penile erection | bulbospongiosus
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| the most important muscle pair in supporting the pelvic visera; forms sphincters at the anorectal junction | levator ani
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| retards venous drainage and helps maintain penile erection | ischiocanvernosus
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| elevates the first two ribs | scalenes
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| prime mover of back extension; consists of three muscle columns | erector spinae
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| one flexes the vertebral column laterally; the pair extends the lumbar spine and fixes the 12th rib | quadratus lumborum
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| extends the vertebral column and head and rotates them to the opposite side | semispinalis
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| prime mover of head flexion; spasms of one causes torticollis | splenius
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| acting together the pair extends the head; one rotates the head and bends it laterally | sternocleidomastoid
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| acts with other muscles in for to accomplish inspiration | diaphragm
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| elevates the scapula; acts to flex the head to the same side of the body | levator scapulae
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| helps to maintain and upright posture | quadratus lumborum
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| prime mover of shoulder abduction when all the fibers contract | deltoid
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| adducts the shoulder and causes extension of the shoulder joint | latisimus dorsi
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| prime mover of head flexion; extends or hyperextends the head | splenius
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| the deepest muscle in the abdominal wall that compresses abdominal contents | transversus abdominis
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| a tendons seam that runs from the sternum to the pubic symphysis | linea alba
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| prime mover of back extension; consists of three muscle columns | erector spinea
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| a rotator cuff muscle that prevents downward dislocation of the humerus | supraspinatus
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| helps to shrug shoulders | trapezius
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| rectangular muscles that act to retract the scapula | rhomboids
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| muscle that holds the scapula tightly against the thorax wall | serratus anterior
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| muscles of the thorax that promote the inspiratory phase of breathing | intercostals
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| prime mover of shoulder flexion and adduction; rotates arm medially | pectoralis major
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Created by:
Hvillain20