Dr. Cutler SU-Skeletal Muscle List-Orgin-Insertion-Action
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| PECTORALIS MAJOR | Sternum, clavicle | Humerus | Adduction and medial rotation of humerus
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| SERRATUS ANTERIOR | Upper 8 Ribs | Scapula | Protracts shoulder and stabilizes scapula
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| RECTUS ABDOMINIS | Pubic symphysis | Costal cartilage, xiphoid process | Flexion of trunk; compresses abdominal contents
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| LATISSUMUS DORSI | Vertebrae, ribs, thoracolumbar fascia | Deltoid tuberosity of humerus | Extension and medial rotation of humerus at shoulder
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| DELTOIDS | Clavicle, scapula | Deltoid tuberosity | Abduction of humerus to 90 degrees
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| TRAPEZIUS | Occipital bone (EOP) and spinous processes to T12 | Clavicle, scapula | Elevate, retract, and depress scapulae
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| BICEPS BRACHII | Coracoid process and scapula | Radial tuberosity (bicipital tuberosity on radius) | Flexion at elbow
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| TRICEPS BRACHII | Scapula and posterior humerus | Olecranon process of ulna | Extension at elbow
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| SARTORIUS | Anterior superior iliac spine (ASIS) | Tibial tuberosity (medial) | Flexion at knee (“tailor’s position”)
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| FLEXORS OF FOREARM | Medial epicondyle of humerus | Metacarpals of wrist | Flexion, aBduction, and aDuction of wrist
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| RECTUS FEMORIS | Anterior inferior iliac spine (ASIS) and ilium | Tibial tuberosity at patellar tendon | Flexion of hip and extension of knee (crosses both joints)
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| TIBIALIS ANTERIOR | Lateral tibia (superior) | Medial metatarsal and tarsal (arch) | Dorsiflexion of ankle
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| GASTROCNEMIUS | Epicondyles of femur | Calcaneus via Achilles tendon | Plantarflexion of ankle OR flexion of knee (can’t do both at same time)
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| MASSETER | Zygomatic arch | Mandibular ramus (lateral surface of mandible) | Elevates mandible (closes jaw and assists protraction)
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| STERNO-CLEIDO-MASTOID | Manubrium, clavicle | Mastoid process | Flex the neck; rotate head to opposite side
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