Origin, Insertion & Action
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each of the black spaces below before clicking
on it to display the answer.
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| Subscapularis | subscapular fossa | lesser tubercle of humerus | show |
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| Rectus Femoris | AIIS | base of patella via patellar ligament to tibial tuberosity | show |
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| show | 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 | show | 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 | show | 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 | show 🗑
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| Sartorius | show | medial surface of tibia | flexes, abducts & laterally rotates thigh @ hip jt; flexes leg @ knee jt |
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| show | 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 | show | 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 | show | extends 4 digits & dorsiflex foot |
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| Flexor Digitorum Longus | show | plantar aspect middal & distal phalange of last 4 toes | flexes 4 digitse & plantar flexessupports longitudinal arch |
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| Tensor Fascia Lata | show | 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 | show | extends knee |
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| rhomboid major | show | medial border of scapula | retracts, elevates, adducts & stabalises, rotates medially |
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| Gracilis | body & inferior ramus of pubis | show | 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 | show 🗑
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| Scalenes | Transverse Processes of C2-C7 | show | BILATERALLY raises 1st & 2nd rib; Unilaterally -laterally flexes & rotates neck on same side |
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| Trapezius | show | lateral 3rd of clavicle, acromion & spine of scapula | elevates, adducts, depresses, rotates & stabalises |
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| show | 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 | show |
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| show | 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 | show | 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 | show 🗑
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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 | show 🗑
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| Teres Major | show | medial lip of intertubercular groove of humerus | adducts & medially rotates arm |
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| Supraspinatus | show | superior facet of greater tubercle of humerus | initiates & assists deltoid in abduction of arm & acts w/ rotator cuff muscles |
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| Deltoid | show | 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 | show 🗑
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| Brachialis | distal 1/2 of anterior surface of humerus | coronoid process & tuberosity of ulna | flexes forearm in all positions | show 🗑
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| Coracobrachialis | show | 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 | show 🗑
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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 | show 🗑
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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 | show 🗑
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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 | show 🗑
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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 | show 🗑
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| Teres Minor | show | 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 | show | 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 | show 🗑
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| Transverse Abdominis | Iliac Crest, cartilage of last 5-6 ribs | Xiphoid process, linea alba & pubis | show |
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| Rectus Abdominis | Pubic Crest & pubic Symphysis | Xiphoid Process, costal cartilage 5-7 ribs | show | 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 | show |
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| Psoas Major | Transverse processes & bodies of lumbar vertabrae | Lesser Trochanter of Femur | Flexes thigh & trunkLaterally rotates thigh | show 🗑
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| Tensor Facia Latae | show | 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 | show |
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Created by:
LInda_J
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