Axial and Appendicular Muscle Actions
Cindy Roberts
Created on December 5, 2023
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Transcript
Anterior View of Muscles and Actions
Quiz Yourself!
Posterior View of Muscles and Actions
Gluteus Maximus - Extend, laterally rotate, and abduct thighGluteus Medius - Abduct, medially rotate the thighPiriformis - Laterally rotate, adduct thighPsos Major - Hip flexionIliacus - Hip flexion
Pelvic Muscles
Sternoclenoid Mastoid - Flexes neckTrapezius - Etends the neck; raise, rotate, adduct the scapula Levator Scapulae - Elevates and adducts the scapula Latissimus Dorsi - Large, broad back muscle. Elevates neck; raise, rotate, adduct the scapulaRhomboid Major - Retract and stabalize scapulaRhomboid Minor - Retract and stabalize scapulaSerratus Anterior - Scapula forward and lateral rotation
Neck/Back Muscles
Biceps Brachii - Flexes elbow and shoulder, supinates armCorachobrachialis - Adduction and Flexion of Humerus Triceps Brachii - Forearm extension Brachialis - Flexion of elbow
Upper Arm Muscles
Superficial Compartement Flexor Carpi Ulnaris - Flexes wrist, adducts handPalmaris Longus - Flexes wristFlexor Carpi Radialis - Flexes wrist, abducts handPronator Teres - Pronates forearm
Lower Arm Muscles
Intermediate Compartment Extensor Digitorium Superficials - Flexes hand and phalanges 2-5 Deep Compartment Flexor Pollicis Longus - Flexes the thumb
Biceps Brachii - Flexes elbow and shoulder, supinates armCoracobrachialis - Flexion of elbowBrachialis - Flexion of elbow Deltoid - Abducts humerus
Anterior Arm Muscles
Brachioradialis - Elbow flexionPronator Teres - Pronates forearmExtensor Carpi Radialis Brevis - Extends and abducts wrists Extensor Carpi Radialis Longus - Extends and abducts wristExtensor Carpi Ulnaris - Extends, adducts wristSupinator - Supinates arn
Anterior Forearm Muscles
Epicranius-Frontalis - Raises eyebrowsEpicranius Occiptalis - Pulls scalp posteriorlyTemporalis - Elevates and retracts mandible Masseter - Elevates mandibleBuccinator - Compresses cheekOrbicularius Oris - Closes lips Zygomaticus Major/Minor - Elevates corners of mouthRisorius - Draws corners of lips laterally.
Muscles of the Head
Biceps Femoris - Extend thigh, flex knee, medially rotate legSemitendinosus - Extend thigh, flex knee, medially rotates leg.Semimembranosus - Extends thigh, flex knee, medially roates thigh Adductor Longus - Adduct, medially rotates and adducts thigh Adductor Magnus - Adduct, medially rotate and flex thighGracilis - Adduct, medially rotate and flex thigh
Posterior Thigh Muscles
Poster
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Lower Leg Muscles
Gastrocnemius - Plantar flexion, flex kneeSoleus - Plantar flexionPopliteus - Rotates tibia laterally Tibialis Posterior - Inversion, plantar flexionFlexor Hallucis Longus - Flexes toe 1, plantar flexionFlexor Digitorium Longus - Flexes toes 2-5, plantar flexion Fibularis Longus - Plantar flexion, eversion of foot
Rectus Femoris - Extends knee, flex hipVastus Lateralis - Extends kneeVastus Medialis - Extends kneeVastus Intermedialis - Deep to rectus femoralis. Extends kneeTensor Fasciae Latae - Flex, abduct, medially rotate thighSartorius - Flex knee; flex, adduct, laterally rotate thigh. Gracilis - Adduct, medially rotate
Anterior Thigh Muscles
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Tibialis Anterior - Dorsiflexion, foot inversionExtensor Digitorium Longus - Toe extension, and dorsiflexion Extensor Hallicus Longus - Extends big toe and dorsiflexion Fibularis Longus - Plantar flexion, eversion of footFibularis Brevis - Plantar flexion, eversion of foot
Anterior Lower Leg Muscles
Pectoralis Major - Flex, medial rotation, and adduction of armPectoralis Minor - Elevates ribs and scapula forward External Intercostals - Decompress ribcage, inspiration Internal Intercostals - Decompress ribcage, expiration Serratus Anterior - Move scapula forward and lateral rotation. Rectus Abdominis - Flex and rotate vertebral columnExternal Oblique - Trunk rotation, lateral flexion, depress ribsInternal Oblique - Trunk rotation, lateral flexion, depress ribsTransverse Abdominis - Compress abdomen
Anterior Torso Muscles
Supraspinatus - Abducts humerus Infraspinatus - Laterally Rotates HumerusSubscapularis - Abducts Humerus Teres Major - Extends, medially rotates, and adducts humerus Teres Minor - Extends, laterally rotates arm
Shoulder Muscles
Extend neck and vertebral column
- Spinalis - attachest to spinous process (medial)
- Longissismus - thickest and longest
- Iliocostalis - most lateral
Erector Spinae Muscles