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Here is the COMPLETE list of all muscles |
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Click on the name below to see the video that locates the muscles on laboratory torso models. |
Action or actions of muscle
& video links if available
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Cadaver video
if available
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Abductor digiti minimi |
Abducts little (5th) finger |
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Abductor pollicis brevis |
Abducts thumb |
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Abductor pollicis longus |
Abducts thumb and extends it |
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Achilies tendon |
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Adductor magnus |
adducts and flexes femur at hip |
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Adductor pollicis |
Draws thumb toward center of palm and rotates the thumb medially |
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Biceps brachii |
Supinates forearm and flexes forearm |
biceps brachii |
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Biceps femoris |
extends thigh (Femur) at hip |
foreleg posterior |
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Brachioradialis |
Flexes forearm |
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Buccinator |
Draws corners of lips laterally |
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Coracobrachialis |
Helps to flex shoulder joint and adduct arm |
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Deltoid (anterior fibers) |
flexes and medially rotates arm |
deltoid |
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Deltoid (posterior fibers) |
extends and laterally rotates arm |
deltoid |
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Extensor carpi radialis brevis |
extends wrist bones on radius side |
forearm posterior |
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Extensor carpi radialis longus |
Extend and abduct hand at wrist joint |
forearm posterior |
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Extensor carpi ulnaris |
Extends and adducts hand at wrist joint |
forearm posterior |
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Extensor digitorum (forearm-fingers) |
Extends four digits at wrist joints;
Extends hand at wrist joint |
forearm posterior |
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Extensor digitorum (foreleg-foot) |
Extend toes 2 - 5 and dorsiflexes foot |
forearm posterior |
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Extensor pollicis brevis |
Extends proximal (base of) thumb at carpometacarpal joint |
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External oblique |
rotates and flexes vertebral column |
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Fibularis (peroneus) brevis |
Dorsiflexion of foot, extension of toes |
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Fibularis (peroneus) longus |
dorsiextends (plantar flexes) and everts the foot |
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Flexor carpi ulnaris |
Flexes wrist and adducts hand (at wrist) |
flexor carpi radialis |
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Flexor digiti minimi |
Flexes proximal phalanx of little (5th) finger |
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Flexor pollicis brevis |
Flexes thumb |
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Frontalis |
wrinkles brow |
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Gastrocnemius |
plantar flexion (or dorsiextends) of ankle |
foreleg posterior |
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Gluteus maximus |
Major extensor of hip joint |
gluteus maximus |
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Gluteus medius |
Major abductor of thigh |
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Gluteus minimus (hidden) |
Abducts and medially rotates the hip joint |
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Gracilis |
Flexes the knee, adducts the thigh |
gracillis |
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Iliacus |
Flexes hip and medially rotates hip |
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Iliopsoas group |
Flex the torso and flexion of thigh |
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Infraspinatus (view 1) |
Major muscle that laterally rotates arm |
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Infraspinatus (view 2) |
Major muscle that laterally rotates arm |
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Latissumus dorsi |
Extends humerus, adducts humerus, and medially rotates humerus |
latissimus dorsi |
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Levator scapulae |
elevates scapula |
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Masseter |
raises mandible (for chewing) |
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Occipitalis |
helps to move the posterior scalp |
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Orbicularis oculi |
closes eye |
orbicularis oculi |
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Orbicularis oris |
Narrows orifice of mouth, purses lips and puckers lip edges |
orbicularis oris |
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Palmaris longus |
Flexes hand (at wrist) |
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Pectoralis major |
Adducts humerus and medially rotates humerus; |
pectoralis major |
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Pectoralis major (upper fibers) |
Adducts humerus and medially rotates humerus; |
pectoralis major |
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Pronator teres |
Pronates forearm and flexes forearm (at elbow) |
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Psoas major |
Flexes hip and laterally rotates hip |
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Rectus abdominis |
flexion of spine |
rectus abdominis |
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Rectus femoris |
Extends the knee |
quadriceps muscle group
rectus femoris |
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Sartorius |
Flexes hip joint and laterally rotates the hip joint and flexes the knee |
sartorius |
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Scalene anterior |
lateral flex of neck, assists in breathing |
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Scalene middle |
lateral flex of neck, assists in breathing |
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Scalene posterior |
lateral flex of neck, assists in breathing |
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Semimembranosus (view 1) |
Extends the thigh, flexes the knee |
hamstrings |
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Semimembranosus (view 2) |
Extends the thigh, flexes the knee |
hamstrings |
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Semitendinosus (view 1) |
Extends the thigh, flexes the knee, adducts femur |
hamstrings |
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Semitnedinosus (view 2) |
Extends the thigh, flexes the knee, adducts femur |
hamstrings |
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Serratus anterior |
abducts scapula and holds it to the thoracic wall |
serratus anterior |
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Soleus |
plantar flexor of foot |
foreleg posterior |
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Splenius capitis |
extends neck and rotates neck |
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Sternocleidomastoid |
flexion of neck, abduction of head |
sternocleidomastoid |
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Tensor fascia latae |
Helps stabilize and steady the hip, abducts femur |
tensor fascia latae |
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Teres major (view 1) |
Adducts humerus (arm) and medially rotates arm |
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Teres major (view 2) |
Adducts humerus (arm) and medially rotates arm |
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Teres minor |
Laterally rotate arm (weakly) |
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Tibialis anterior |
Dorsiflexor of foot and invertor of foot |
tibialis anterior |
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Trapezius |
Elevates scapula, retracts scapula away from thorax and rotates scapula |
trapezius |
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Triceps brachii |
extensor of forearm |
triceps brachii |
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Vastus intermedius |
Extends the knee |
quadriceps muscle group |
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Vastus lateralis |
Extends the knee, abducts femur |
quadriceps muscle group |
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Vastus medialis |
Extends the knee, adducts femur |
quadriceps muscle group |
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