Muscle
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Muscle
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muscles orig and ins
Muscle | Origin | Insertion | Function |
---|---|---|---|
Rectus Femoris | capsule of hip joint | patella and tibia | extends knee |
Vastus Lateralis | femoral surface | patella and tibia | extends knee |
Vastus Medialis | femoral surface | patella and tibia | extends knee |
Vastus Intermedius | femoral surface | patella and tibia | extends knee |
Fibularis Longus | head and proximal 2/3 fibula | medial cuneiform, metatarsal I | plantar flexes foot, sole concavity |
Soleus | Posterior fibula head, middle 1/3 tibia | Calcaneus | plantar flexes foot |
Gastrocnemius | femur | calcaneus | plantar flexes foot |
Popliteus | lateral condyle of femur | posterior surface of tibia | allows flexion, rotation |
Semimembranosus | ischial tuberosity | medial condyle of tibia, lateral condyle of femur | flexes knee |
Semitendinosus | ischial tuberosity | medial surface of upper tibia | flexes knee |
Biceps Femoris | Long: ischial tuberosity Short: linea aspera of femur | Fibula head | flexes knee |
Teres Major | inferior angle of scapula | humerus | extends and rotates humerus |
Subscapularis | subscapular fossa of scapula | humerus | rotates humerus medially |
Biceps Brachii | humerus | radius | elbow flexion, supination of forearm |
Triceps Brachii | Long: glenoid cavity Lateral: proximal end of humerus Medial: humerus shaft | olecranon | extends elbow |
Sartorius | acetabulum | medial proximal end of tibia | knee and hib flexion |
Gluteus Maximus | coccyx, posterior ilium | tuberosity of femur, lateral condyle of tibia | extends thigh |
Tensor Fasciae Latae | iliac crest | lateral condyle of tibia | extends knee |
Tibialis Anterior | lateral condyle of tibia | medial cuneiform | extends foot |
Brachioradialis | humerus | radius | flexes elbow |
Brachialis | humerus | coronoid process of ulna | flexes elbow |
Latissimus Dorsi | C7-T5, iliac crest | humerus | extends shoulder joint, adducts humerus |
Deltoid | Acromion and spine of scapula; clavicle | deltoid tuberosity of humerus | flex and rotate arm |
Infraspinatus | infraspinous fossa of scapula | greater tubercle of humerus | rotates humerus laterally |
Supraspinatus | supraspinous fossa of scapula | greater tubercle of humerus | aids deltoid w/ abduction of arm |
Teres Minor | lateral border, posterior surface of scapula | greater tubercle of humerus | rotates humerus laterally |
Serratus Anterior | All ribs | medial border of scapula | protracts scapula |
Rhomboid | spinous processes of C7-t5 | medial border of scapula | retracts scapula |
Pectoralis Major | medial 1/2 clavicle, lateral margin of sternum | humerus | flexes and adducts humerus |
Levator Scapulae | transverse processes of c1-c4 | medial border of scapula | flexes neck, retracts scapula |
Trapezius | spinous processes of C7-T3 or T4 | spine of scapula, lateral 1/3 clavicle | extends neck, stabilizes scapula |
Fibularis Brevis | lateral surface of distal 2/3 fibula | base of metatarsal V | steady leg on foot |
Gluteus Medius and Minimus | lateral surface of ilium | greater trochanter of femur | abduct and rotate thigh |