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A&P Muscle Practicum
Muscle ;action, origin, and insertion
| Question | Answer |
|---|---|
| ORBICULARIS OCULI ACTION | BLINKING & SQUINTING |
| ORBICULARIS ORIS ACTION | CLOSE LIPS, KISSING,& WHISTLING |
| ZYGOMATICUS ACTION | SMILING |
| BUCCINATOR ORIGIN | MAXILLA AND MANDIBLE |
| BUCCINATOR INSERTION | ORBICULARIS ORIS |
| BUCCINATOR ACTION | COMPRESSES CHEEKS-SUCKING |
| MASSETER ORIGIN | ZYGOMATIC BONE & MAXILLA |
| MASSETER INSERTION | MANDIBLE |
| MASSETER ACTION | CLOSES JAW & ELEVATES MANDIBLE |
| TEMPORALIS ORIGIN | TEMPORAL BONE |
| TEMPORALIS INSERTION | MANDIBLE |
| TEMPORALIS ACTION | CLOSES JAW & ELEVATES/RETRACTS MANDIBLE |
| STERNOCLEIDOMASTOID ORIGIN | STERNUM & CLAVICLE |
| STERNOCLEIDOMASTOID INSERTION | TEMPORAL & OCCIPITAL |
| STERNOCLEIDOMASTOID ACTION | ROTATE HEAD TOWARD OPPOSITE SHOULDER &NECK FLEXION WHEN BOTH MUSCLES CONTRACT |
| PECTORALIS MAJOR ORIGIN | STERNUM, CLAVICLE, RIBS, & EXTERNAL OBLIQUE MUSCLE |
| PECTORALIS MAJOR INSERTION | HUMERUS |
| PECTORALIS MAJOR ACTION | ARM FLEXION & FORCED INSPIRATION |
| PECTORALIS MINOR ORIGIN | RIBS |
| PECTORALIS MINOR INSERTION | SCAPULA |
| PECTORALIS MINOR ACTION | SCAPULA PULLED FORWARD AND INFERIORLY |
| LATISSIMUS DORSI ORIGIN | ILIAC CREST, THORACIC AND LUMBAR VERTEBRAE |
| LATISSIMUS DORSI INSERTION | ANTERIOR HUMERUS |
| LATISSIMUS DORSI ACTION | ARM EXTENSION. ADDUCTION & MEDIAL ROTATION |
| SERRATUS ANTERIOR ACTION | ABDUCTION & RAISING OF ARM BOXER'S MUSCLE |
| DIAPHRAGM ACTION | INSPIRATION, FLATTENS ON CONTRACTION |
| EXTERNAL INTERCOSTALS ACTION | ELEVATES RIBS-AIDS IN INSPIRATION |
| INTERNAL INTERCOSTALS ACTIONS | LOWERS RIBS-AIDS IN FORCED EXPIRATION |
| TRAPEZIUS ORIGIN | OCCIPITAL BONE. SPINOUS PROCESSES OF C7 & THORACIC VERTEBRAE |
| TRAPEZIUS INSERTION | ACROMION AND SPINOUS PROCESSES OF SCAPULA & CLAVICLE |
| TRAPEZIUS ACTION | EXTENDS HEAD. ADDUCTS SCAPULA("STAND AT ATTENTION") |
| RECTUS ABDOMINIS ORIGIN | PUBIC BONE-CREST & SYMPHYSIS |
| RECTUS ABDOMINIS INSERTION | STERNUM-XIPHOID PROCESS & COSTAL CARTILAGES OF RIBS |
| RECTUS ABDOMINIS ACTION | FLEXES & ROTATES VERTEBRAL COLUMN |
| EXTERNAL OBLIQUE ACTION | FLEXES & ROTATES VERTEBRAL COLUMN |
| INTERNAL OBLIQUE ACTION | FLEXES & ROTATES VERTEBRAL COLUMN |
| TRANSVERSE ABDOMINUS ACTION | COMPRESSES ABDOMINAL CONTENTS |
| DELTOID ORIGIN | CLAVICLE & SCAPULA |
| DELTOID INSERTION | HUMERUS |
| DELTOID ACTION | ABDUCTION OF HUMERUS |
| CORACOBRACHIALIS ORIGIN | SCAPULA |
| CORACOBRACHIALIS INSERTION | HUMERUS |
| CORACOBRACHIALIS ACTION | FLEXES & ADDUCTS HUMERUS |
| BICEPS BRACHII ORIGIN | SCAPULA |
| BICEPS BRACHII INSERTION | RADIUS-RADIAL TUBEROSITY |
| BICEPS BRACHII ACTION | FLEXES ELBOW JOINT, ANTAGONIST OF FOREARM EXTENSION |
| BRACHIORADIALIS ORIGIN | HUMERUS |
| BRACHIORADIALIS INSERTION | RADIUS-STYLOID PROCESS |
| BRACHIORADIALIS ACTION | FLEXES ELBOW JOINT |
| BRACHIALIS ORIGIN | HUMERUS |
| BRACHIALIS INSERTION | ULNA |
| BRACHIALIS ACTION | FLEXES ELBOW JOINT |
| EXTENSOR DIGITORUM ORIGIN | LATERAL EPICONDYLE OF HUMERUS |
| EXTENSOR DIGITORUM INSERTION | DISTAL PHALANGES |
| EXTENSOR DIGITORUM ACTION | EXTENDS FINGERS AND WRIST, ABDUCTS FINGERS |
| TRICEPS BRACHII ORIGIN | SCAPULA & HUMERUS |
| TRICEPS BRACHII INSERTION | ULNA-OLECRANON PROCESS |
| TRICEPS BRACHII ACTION | EXTENSION AT ELBOW JOINT & ANTAGONIST OF FOREARM FLEXION |
| SUPINATOR ACTION | SUPINATE FOREARM |
| PRONATOR ACTION | PRONATES FOREARM |
| FLEXOR CARPI RADIALIS ORIGIN | MEDIAL EPICONDYLE ON HUMERUS |
| FLEXOR CARPI RADIALIS INSERTION | BASE OF METACARPALS 2,3 |
| FLEXOR CARPI RADIALIS ACTION | FLEX WRIST, ABDUCTS HAND |
| SARTORIUS ACTION | FLEX, ABDUCT, & LATERALLY ROTATE THIGH.HELPS WITH CROSS-LEGGED POSTION(TAILOR'S MUSCLE) |
| RECTUS FEMORIS(QUADRICEP) ORIGIN | ILIUM-ILIAC SPINE & ACCTABULUM |
| RECTUS FEMORIS(QUADRICEP) INSERTION | PATELLA & TIBIA-TIBIAL TUBEROSITY |
| RECTUS FEMORIS(QUADRICEP) ACTION | EXTENDS KNEE & FLEXES THIGH AT THE HIP |
| VASTUS LATERALIS(QUADRICEPS) ORIGIN | FEMUR |
| VASTUS LATERALIS(QUADRICEPS) INSERTION | PATELLA & TIBIA-TIBIAL TUBEROSITY |
| VASTUS LATERALIS(QUADRICEP) ACTION | EXTENDS KNEE |
| VASTUS MEDIALIS(QUADRICEP) INSERTION | PATELLA & TIBIA-TIBIAL TUBEROSITY |
| VASTUS INTERMEDIUS(QUADRICEP)ORIGIN | FEMUR |
| VASTUS INTERMEDIUS(QUADRICEP) INSERTION | PATELLA & TIBIA-TIBIAL TUBEROSITY |
| VASTUS INTERMEDIUS(QUADRICEP) ACTION | EXTENDS KNEE |
| VASTUS MEDIALIS(QUADRICEP) ORIGIN | FEMUR |
| VASTUS MEDIALIS(QUADRICEP) ACTION | EXTENDS KNEE |
| TENSOR FASCIAE LATAE ORIGIN | ILIUM-CREST & SPINE |
| TENSOR FASCIAE LATAE INSERTION | TIBIA |
| TENSOR FASCIAE LATAE ACTION | FLEX, ABDUCTS, & MEDIALLY ROTATES THIGH |
| GLUTEUS MAXIMUS ORIGIN | ILIUM, SACRUM,& COCCYX |
| GLUTEUS MAXIMUS INSERTION | FEMUR |
| GLUTEUS MAXIMUS ACTION | EXTENDS THIGH (CLIMBING STAIRS) |
| GLUTEUS MEDIUS ACTION | ABDUCTS AND MEDIALLY ROTATES THIGH(IMPORTANT WALKING) |
| GRACILIS ACTION | ADDUCTS THIGH, FLEXION, & MEDIAL ROTATION OF LEG IN WALKING |
| ADDUCTOR LONGUS ACTION | ADDUCT THIGH, FLEXION, & MEDIAL ROTATION OF LEG IN WALKING |
| BICEPS FEMORIS(HAMSTRING)ORIGIN | FEMUR & ISCHIUM |
| BICEPS FEMORIS(HAMSTRING) INSERTION | TIBIA & FIBULA |
| BICEPS FEMORIS(HAMSTRING) ACTION | EXTENDS THIGH & FLEXES KNEE |
| SEMITENDINOSUS(HAMSTRING) ACTION | EXTENDS THIGH & FLEXES KNEE |
| SEMIMEMBRANOSUS(HAMSTRING) ACTION | EXTENDS THIGH & FLEXES KNEE |
| TIBIALIS ANTERIOR ORIGIN | TIBIA |
| TIBIALIS ANTERIOR INSERTION | TARSAL & METATARSAL |
| TIBIALIS ANTERIOR ACTION | DORSIFLEXION |
| GASTROCNEMIUS ORIGIN | FEMUR-MEDIAL AND LATERAL CONDYLES |
| GASTROCNEMIUS INSERTION | CALACANEUS |
| GASTROCNEMIUS ACTION | PLANTAR FLEXION |
| SOLEUS ORIGIN | TIBIA & FIBULA |
| SOLEUS INSERTION | CALACANEUS |
| SOLEUS ACTION | PLANTAR FLEXION |
| EXTENSOR DIGITORUM LONGUS ORIGIN | TIBIA & FIBULA |
| EXTENSOR DIGITORUM LONGUS INSERTION | MIDDLE AND DISTAL PHALANGES |
| EXTENSOR DIGITORUM LONGUS ACTION | DORSI FLEXION, INVERSION |