Muscle OIA

ANATOMY 1

vastus lateralis

• O: greater trochanter and linea aspera

• I: patella, tibial tuberosity, and lateral and medial condyles of tibia

• A: extension

pectoralis major

• O: clavicle, sternum, and costal cartilages 1-7

• I: intertubercular sulcus

• A: adduction

deltoid

• O: acromion/acromial process, scapular spine, and clavicle

• I: deltoid tuberosity

• A: abduction

biceps femoris

• O: ischial tuberosity, linea aspera, and lateral supracondylar line

• I: head of fibula

• A: flexion

gastrocnemius

• O: medial condyle of femur, lateral condyle of femur, and lateral supracondylar line

• I: calcaneus

• A: plantar flexion

tibialis anterior

• O: lateral condyle and lateral margin of proximal half of tibia and interosseous membrane

• I: medial cuneiform and metatarsal I

• A: dorsiflexion

triceps brachii

• O: glenoid cavity and humerus

• I: olecranon process

• A: extension

biceps brachii

• O: glenoid cavity and coracoid process

• I: radial tuberosity

• A: flexion

brachialis

• O: anterior surface of distal half of humerus

• I: coronoid process and tuberosity of ulna

• A: flexion

latissimus dorsi

• O: vertebrae T7-L5, lower 3-4 ribs, and iliac crest

• I: intertubercular sulcus

• A: adduction (?)