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Anatomy Muscle OIAs

Rectus abdominus O- Pubic crest/symphysis I- Xiphoid process/costal cartilages A- Flexes the trunk
Gluteus maximus O- Ilium/sacrum/coccyx I- Gluteal tuberosity of femur A- Extends the hip
Biceps femoris O- Long head: ischial tuberosity Short head: linea aspera I- Head of fibula and lateral condyle of tibia A- Extends the hip/flexes the knee
Semitendinosus O- Ischial tuberosity I- Medial, upper shaft of tibia A- Extends the hip/flexes the knee
Semimembranosus O- Ischial tuberosity I- Medial condyle of tibia A- Extends the hip/flexes the knee
Psoas major O- Lumbar vertebrae I- Lesser trochanter of femur A- Flexes the hip and trunk
Iliacus O- Iliac fossa/ala of sacrum I- Lesser trochanter of femur A- Flexes the hip and trunk
Rectus Femoris O- Anterior inferior iliac spine/acetabular labrum I- Patella/tibial tuberosity A- Extends the knee/ flexes the hip
Vastus medialis O- Linea aspera/medial supracondylar line/Intertrochanteric line I- Patella/tibial tuberosity A- Extends the knee
Vastus lateralis O- Linea aspera/greater trochanter/Intertrochanteric line I- Patella/tibial tuberosity A- Extends the knee
Vastus intermedius O- Anterior shaft of femur I- Patella/tibial tuberosity A- Extends the knee
Adductor magnus O- Ischial and pubic rami/ischial tuberosity I- Linea aspera/adductor tubercle of femur A- Adducts the hip
Gracilis O- Inferior ramus and body of pubis/ischial ramus I- Medial condyle of tibia A- Adducts the hip
Gastrocnemius O- Medial and lateral condyles of femur I- Posterior calcaneus (calcaneal tendon) A- Plantarflexion
Soleus O- Superior tibia, fibula, and interosseous membrane I- Posterior calcaneous (calcaneal tendon) A- Plantarflexion
Tibialis anterior O- Lateral condyle/proximal shaft of tibia I- Medial cuneiform/1st metatarsal A- Dorsiflexion
Sternocleidomastoid O- Manubrium/clavicle I- Mastoid process A- Flexes and laterally rotates the head
Deltoid O- Clavicle/acromion/spine of scapula I- Deltoid tuberosity of humerus A- Abducts the shoulder
Pectoralis major O- Clavicle/sternum/costal cartilages I- Greater tubercle of humerus A- Flexes/medially rotates/adducts the shoulder
Biceps brachii O- Short head: corocoid process of scapula Long head: supraglenoid tubercle I- Radial tuberosity A- Flexes/supinates the elbow
Triceps brachii O- Long head: infraglenoid tubercle Lateral head: posterior shaft of humerus Medial head: posterior shaft of humerus I- Olecranon process A- Extends the elbow
Created by: bhammock



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