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Origin, Insertion & Action

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Muscle
Origin
Insertion
Actions
TRICK
Subscapularis   subscapular fossa   lesser tubercle of humerus   medially rotates & adducts arm; help hold humeral head in glenoid cavity    
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Rectus Femoris   AIIS   base of patella via patellar ligament to tibial tuberosity   Flexes thigh at hip extends leg at knee    
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Gluteus Medius   external surface of ilium <-> anterior & posterior gluteal lines   lateral surface of greater trochanter   abducts & medially rotates thigh; keeps pelvis level when opposite leg is raised    
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Pectoralis Major   CLAVICULAR HEAD-> anterior surface of medial 1/2 of clavicle. STERNAL HEAD-> anterior surface of sternum, superior 6 costal cartilages & aponeurosis of external oblique   lateral lip of intertubercular groove of humerus   TOGETHER-> adducts & medially rotates humerus; draws scapula anteriorly & inferiorly. ALONE-> clavicular head flexes humerus & sternocostal head extends it from flexed position    
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Serratus Anterior   superior 8 or 9 ribs   medial border & inferior angle of scapula   abducts scapula & rotates it upward, elevates ribs when scap stabalised    
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Quadratus Lumborum   Iliac Crest   inferior border of 12th rib, transverse processes of L1-L4   extends & laterally flexes vert. column; fixes 12th rib during inspiration   Iliac Crest 4 QL  
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Sartorius   ASIS   medial surface of tibia   flexes, abducts & laterally rotates thigh @ hip jt; flexes leg @ knee jt    
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Vastus Lateralis   greater trochanter & lateral lip of linea aspera   base of patella via patellar ligament to tibial tuberosity   extends knee,    
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Peroneus Longus   head & superior 2/3 of lateral fibula, lat condyle of tibia   base of 1st metatarsal & medial cuneiform   everts foot @ weakly plantarflexes ankle   All Peroneus Everts - SNEAKY goes under prominence on little toe  
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Extensor Digitorum longus   Lateral condyle of tibia, superior 1/3 of anterior fibula & interosseous membrane   middle & distal phalange of last 4 toes   extends 4 digits & dorsiflex foot    
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Flexor Digitorum Longus   Medial posterior tibia inferior to soleal line   plantar aspect middal & distal phalange of last 4 toes   flexes 4 digitse & plantar flexessupports longitudinal arch    
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Tensor Fascia Lata   ASIS & anterior part of iliac crest   iliotibial tract that attaches to lateral condyle of tibia   abducts, medially rotates & flexes thigh; steadies trunk on thigh; helps to keep ? extended    
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Vastus Medialis   medial lip of linea aspera   base of patella via patellar lig. to tibial tuberosity   extends knee    
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rhomboid major   transverse processes of C1-C4   medial border of scapula   retracts, elevates, adducts & stabalises, rotates medially    
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Gracilis   body & inferior ramus of pubis   superior part of medial surface of tibia   adducts thigh, flexes leg & rotates medially    
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Sternocleidomastoid   superior sturnum & medial 1/3 clavicle   Mastoid process   Uni - extends & rotates head on opp sideBilaterally - flexes neck & head & elevates sturnum during forced inhalation   Extends & rotates OPPOSITE Side  
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Scalenes   Transverse Processes of C2-C7   1st & 2nd ribs   BILATERALLY raises 1st & 2nd rib; Unilaterally -laterally flexes & rotates neck on same side    
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Trapezius   medial 3rd of superior nuchal line; external occipital protuberance; nuchal ligament & sp. processes of C7 to T12 vert.   lateral 3rd of clavicle, acromion & spine of scapula   elevates, adducts, depresses, rotates & stabalises    
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Pectoralis Minor   ribs 3/4/5 near costal cartilage   coracoid process   stabilizes scapula by drawing it inferiorly & anteriorly against thoracic wall    
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Piriformis   anterior surface of sacrum & sacrotuberous ligament   superior border of greater trochanter   laterally rotates extended thigh & abducts flexed thigh; steady femoral head in acetabulum    
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Splenius Capitis   inf 1/2 of nuchal ligament & sp. processes of T1 to T6   lateral aspect of mastoid process & lateral 3rd of superior nuchal line   ALONE-> laterally flexes & rotates head ipsilateral. TOGETHER-> extends head & neck    
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Gluteus Maximus   ilium posterior to posterior gluteal line, dorsal surface of sacrum, coccyx & sacrotuberous ligament   most fibres end in IT band inserting into lateral condyle of tibia   extends thigh from flexed position; assists in lateral rotation; steadies thigh & assists in rising from seated position    
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Latissimus Dorsi   sp. processes of T7 to T12 vert.; thoracolumbar fascia, iliac crest & inferior 3 or 4 ribs   floor of intertubercular groove of humerus   extends, adducts, medially rotates humerus; raises body toward arms during climbing    
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Semitendinosis   ischial tuberosity   medial surface of superior part of tibia   extends thigh, flexes leg & medially rotates when knee flexed; can extend trunk when thigh & leg are flexed    
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Teres Major   dorsal surface of inferior angle of scapula   medial lip of intertubercular groove of humerus   adducts & medially rotates arm    
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Supraspinatus   supraspinous fossa   superior facet of greater tubercle of humerus   initiates & assists deltoid in abduction of arm & acts w/ rotator cuff muscles    
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Deltoid   lateral 3rd of clavicle, acromion & spine of scapula   deltoid tuberosity of humerus   ANTERIOR PART-> flexes & medially rotates arm. MIDDLE PART-> abducts arm. POSTERIOR PART-> extends & laterally rotates arm    
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Biceps Brachii   Short Head-> tip of coracoid process. Long Head-> supraglenoid tubercle of scapula   radial tuberosity & fascia of forearm via bicipital aponeurosis   supinates forearm & when supine, flexes forearm    
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Brachialis   distal 1/2 of anterior surface of humerus   coronoid process & tuberosity of ulna   flexes forearm in all positions    
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Coracobrachialis   tip of coracoid process   middle 3rd of medial surface of humerus   helps to flex & adduct arm    
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Brachioradialis   prox. 2/3 of supracondylar ridge of humerus   lateral surface of distal ends of radius   flexes forearm    
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Gluteus Minimus   external surface of ilium & anterior & inferior gluteal lines   anterior surface of greater trochanter   abducts & medially rotates thigh; keeps pelvis level when opposite leg is raised    
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Temporalis   floor & deep fascia of temporal fossa   tip & medial surface of coronoid process of mand; anterior border of ramus of mand   elevate mandible; retract mandible    
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Masseter   inferior border & medial surface of zygomatic arch   lateral surface of ramus of mandible & coranoid process   elevates & protrudes mandible, deep fibres retrude    
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Levator Scapulae   Posterior tubercles of TVP's of C1-C4   superior part of medial border of scap (above root of spine)   elevate scap, rotate scap to depress glenoid cavity    
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Teres Minor   superior part of lateral border of scap   inferior facet of greater tubercle of humerus   laterally rotate arm, hold humeral head in glenoid cavity    
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External Oblique   Inferior surface of last 8 ribs   iliac crest, linea alba   Compress & Support abdomenFlex & Rotate vertabral column   Hands in Pockets  
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Internal Oblique   Iliac Crest   Linea Alba, costal cartilage of last 3 ribs   Compress & Support abdomenFlex & Rotate vertabral column    
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Transverse Abdominis   Iliac Crest, cartilage of last 5-6 ribs   Xiphoid process, linea alba & pubis   Compress & Support    
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Rectus Abdominis   Pubic Crest & pubic Symphysis   Xiphoid Process, costal cartilage 5-7 ribs   Compress & Support AbdomenFlexes Vertebral Column   MAIN FLEXOR  
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Triceps Brachii   Long head -Inferior glenoid tubercleLateral head - posterior humerous superior to radial grooveMedial Head - posterior humerous inferior to radial groove   olecranon process of ulna   Extend forearm, extend arm    
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Psoas Major   Transverse processes & bodies of lumbar vertabrae   Lesser Trochanter of Femur   Flexes thigh & trunkLaterally rotates thigh   Psoas Major marches lumbar, lessor flexes  
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Tensor Facia Latae   ASIS   ITB attaches to lateral condyle on tibia (over knee)   flexes & abducts thigh at hipmedially rotates thigh    
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Vastus Intermedius   anterior lateral surface of femur   patella via quad tendon then tibial tuberosity via patella ligament   flexes thigh at hipextends leg at knee    
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