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SHHS PDHPE 11 muscle

Major Muscles

Deltoid Origin: scapula, clavicle Insertion: humerus Action: abduction of arm
Biceps brachii Origin: humerus, scapula Insertion: radius Action: flexion of forearm and arm, supination of arm
Triceps Origin: scapula, humerus Insertion: ulna (proximal end) Action: extension of forearm and arm
Latissimus dorsi Origin: spine T6-L5, iliac crest Insertion: humerus (proximal end) Action: adduction, extension and rotation of arm
Trapezius Origin: base of skull C7-T5 vertabrae Insertion: scapula (upper surface), clavicle Action:adduction of scapula, elevation of shoulders
Pectorals Origin: sternum, clavicle Insertion: head of humerus Action: flexion and adduction of arm
Erector spinae (sacrospinalis) Origin: base of skull Insertion:sacrum Action: extension of back
Gluteus maximus Origin: posterior surface of pelvis, sacrum Insertion: femur Action: extension and abduction of thigh
Rectus abdominus Origin: crest of pubis Insertion: ribs 5,6, 7 Action: flexion of trunk
External obliques Origin: lower 8 ribs Insertion: iliac crest Action:flexion and rotation of trunk
Hamstrings Origin: Insertion: tibia, head of fibula, Action: extension of thigh flexion of lower leg
Quadriceps Origin: iliac crest, femur Insertion: tibia (proximal end) Action: flexion of hip, extension of lower leg
Gastrocnemius Origin: femur (distal end) Insertion: heel bone (posterior) Action: knee flexion, plantar flexion of foot
Soleus Origin: tibia and fibula Insertion: heel bone (posterior) Action: plantar flexion of foot
Tibialis anterior Origin: tibia Insertion: ankle, tarsal, metatarsal Action: dorsiflexion and inversion of foot
Created by: lisagass