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Major Muscles of HMS

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Muscles
Concentric Action
Isometric Action
sartorius   hip flexion, external rotation & abduction, knee flexion, external rotation   LPHC and knee  
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tensor facia latae   hip flexion, abduction, internal rotation   LPHC  
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rectus femoris   hip flexion, knee extension   LPHC and knee  
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biceps femoris - long head   knee flexion, hip extension, tibial external rotation   LPHC and knee  
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semimembranosis   hip extension, knee flexion, tibial internal rotation   LPHC and knee  
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semitendinosis   hip extension, knee flexion, tibial internal rotation   LPHC and knee  
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adductor magnus, longus, brevis, gracilis & pectineus   adduction, flexion,internalrotation,   LPHC  
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gastrocnemius   plantarflexion   foot & ankle complex  
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soleus   plantarflexion (esp. knee bent)   foot & ankle complex  
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tibialis anterior   dorsiflexion, inversion   arch of foot  
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psoas   hip flexion, external rotation, extends & rotates lumbar spine   LPHC  
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gluteus maximus   hip extension, external rotation   LPHC  
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gluteus medius - anterior fibers   hip abduction, internal rotation   LPHC  
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peroneus longus   plantarflexion, eversion   foot & ankle complex  
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tibialis posterior   inversion, plantarflexion   arch of foot  
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vastus lateralis   knee extension   knee  
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vastus intermedius   knee extension   knee  
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vastus medialis   knee extension   knee  
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biceps femoris - short head   knee flexion, tibial external rotation   knee  
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adductor magnus - posterior fibers   adduction, extension, external rotation   LPHC  
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gluteus medius - posterior fibers   hip abduction, external rotation   LPHC  
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gluteus minimus   hip abduction, flexion, internal rotation   LPHC  
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piriformis   hip external rotation, abduction & extension   Hip and SIJs  
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rectus abdominus   spinal flexion, lateral flexion & rotation   LPHC  
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external oblique   spinal flexion, lateral flexion & contralateral rotation   LPHC  
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internal oblique   spinal flexion (bilateral), lateral flexion & ipsilateral rotation   LPHC  
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transverse abdominus   increases intra-abdoominal pressure. supports abdominal viscera   synergistically w/internal oblique, multifidus & deep erector spinae to stabilize LPHC  
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diaphragm   pulls central tendon inferiorly, increasing the volume in the thoracic cavity   LPHC  
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latissiumus dorsi   shoulder extension, adduction & internal rotation   LPHC, shoulder  
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serratus anterior   scapular protraction   scapula  
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rhomboids   produces scapular retraction & downward rotation   scapula  
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lower trapezius   scapular depression   scapula  
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middle trapezius   scapular retraction   scapula  
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upper trapezius   cervical extension; lateral flexion & rotation; scapular elevation   stabilizes cervical spine & scapula, stabilizes medial border of scapula creating a stable base for prime movers during scapular abduction & upward rotation  
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levator scapulae   cervical extension, lateral flexion & ipsilateral rotation when scapulae is anchored; assists in elevation & downward rotation of scapulae   cervical spine & scapulae  
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pectoralis major   shoulder flexion (clavicular fibers), horizontal adduction & internal rotation   shoulder girdle  
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pectoralis minor   protracts the scapula   shoulder girdle  
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anterior deltoid   shoulder flexion & internal rotation   shoulder girdle  
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medial deltoid   shoulder abduction   shoulder girdle  
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Created by: aprince07
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