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NHI Kinesiology E

ORIGIN, INSERTION, ACTION BILATERALLY, ACTION UNILATERALLY

MuscleOriginInsertionAction
Sternocleidomastoid manubrium and medial Clavicle Mastoid Process, superior nuchal line rotates,extends and flexes neck
biceps brachii short head: coracoid process of scapulalong head: supraglenoid tubercle tuberosity of the radius flexion of elbow, supination of forearm.long head: flexion of humerus
Scalenes Transverse process of cervical vertebrae Ribs 1 and 2 Flexes and rotates neck, elevates ribs 1&2
Triceps Brachii Inferior,distal margin of mandible(anterior belly)mastoid notch of long head:infraglenoid tuberclelateral head:posterior surface proximal half of humerus.medial head:posterior surface distal half of humerus. olecranon process of ulna extension of elbow.long head: extension of humerus
Deltoid lateral 1/3 of clavicle, lateral acromion and spine of scapula deltoid tuberosity of humerus anterior:flexion, horizontal adduction, medial rotation of humerus.middle:abduction of humerus to 90 degrees.posterior-extension, horizontal abduction, lateral rotation of humerus.
Pectoralis Major medial half of clavicle, sternum and cartilages of upper 6 ribs. greater tubercle of humerus. all fibers: adduct and medially rotate g/h joint. assist in elevating thorax during forced inhalation.upper fibers:flex and horizontally adduct g/h joint.lower fibers: extend g/h joint
Latissimus Dorsi spinous processes of last six thoracic vertebrae, last 3-4 ribs, thoracolumbaraponeurosis and posterior iliac crest. crest of lesser tubercle of humerus extension, medial rotation and adduction of g/h joint.
Supraspinatus supraspinous fossa of scapula greater tubercle of humerus abduction of g/h joint.stabilizes head of humerus
Infraspinatus infraspinous fossa of scapula greater tubercle of humerus lateral rotation, adduction, extension and horizontal abduction of g/h joint.stabilizes head of humerus.
Teres Minor superior half of lateral border of scapula greater tubercle of humerus laterally rotates, adducts, extends and horizontally abducts g/h joint.stabilizes head of humerus.
Subscapularis subscapular fossa of scapula lesser tubercle of humerus medially rotates g/h joint.stabilizes head of humerus.
Levator Scapula Transverse processes first thru fourth cervicle vertebrae. upper region of medial border and superior angle of scapula. elevation and downward rotation of scapula.laterally flexes head and neck.rotates head and neck to same side.
Trapezius ext. occipital protuberance, med. portion superior nuchal line, ligamentum nuchae and spinous processes C-7 thru T-12 lateral 1/3 clavicle, acromion and spine of scapula. upper fibers:bilat- ext. head & neckunilat- lat. flex head & neck same side, rot. head & neck opp. side, elevate scap, upwardly rot. scap.middle fibers:abduct scap, stabilize scap.lower fibers:depress scap, upwardly rotate scap
Rhomboids maj-spinous processes T-2 to T-5min- spinous processes C-7 &T-1 maj- med. border of scap from spine of scap to inferior angle.min- upper portion medial border of scap across from spine. adduct, elevate and downwardly rotate scapwnwardly rotate scap.
Pectoralis Minor 3rd, 4th and 5th ribs coracoid process of scapula depresses scap, abducts scapula, tilts scapula anteriorly and assists in forced inhalation.
Serratus Anterior surfaces of upper 8 or 9 ribs anterior surface of medial border of scapula abducts scap, depresses scap, holds medial border of scap against ribcage.
Quadriceps(Rectus Femoris) anterior inferior iliac spine (AIIS) tibial tuberosity extends the knee, flexes the hip
Quadriceps(Vastus Group) lateralis-lat. lip linea aspera &gluteal tuberositymedialis-medial lip linea asperaintermedius-anterior and lateral shaft of femur all - tibial tuberosity all - extend the knee
Hamstrings(Biceps Femoris) long head-ischial tuberosityshort head- lateral lip of linea aspera head of fibula flex knee, lat. rotate flexed knee, extend hip, lat. rotate hip, tilt pelvis posteriorly
Hamstrings(Semimembranosus and Semitendinosus) ischial tuberosity semimem- post aspect of medial condyle of tibiasemiten- prox. medial shaft of tibia and pes anserinus tendon both- flex knee, medially rotate flexed knee, extend hip medially rotate hip, tilt pelvis posteriorly.
Gastrocnemius condyles of the femur (posterior surfaces) calcaneus via calcaneal tendon flex knee, plantar flex ankle
Soleus soleal line, posterior surface of tibia and proximal, posterior surface of fibula. calcanues via calcaneal tendon plantarflexion of the ankle
Piriformis anterior surface of sacrum greater trochanter laterally rotates hip, abducts thigh when hip is flexed.
Created by: sgajus
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