Muscles Origins and Insertions. Muscles from pg. 44-45 in text Muscle NameFunctionDescribe movements...

download Muscles Origins and Insertions. Muscles from pg. 44-45 in text Muscle NameFunctionDescribe movements OriginInsertion Sternocleidomastoid Broad superficial

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Transcript of Muscles Origins and Insertions. Muscles from pg. 44-45 in text Muscle NameFunctionDescribe movements...

  • Slide 1
  • Muscles Origins and Insertions
  • Slide 2
  • Muscles from pg. 44-45 in text Muscle NameFunctionDescribe movements OriginInsertion Sternocleidomastoid Broad superficial muscle running up each side of the neck AgonistFlexes and rotates the head Sternum Clavicle Mastoid process Muscle NameFunctionDescribe movements OriginInsertion Splenius Runs posterior joins skull and spine AgonistFlexes and rotates the head Cervical & thoracic vertebrae Temporal &occipital lobes
  • Slide 3
  • Neck Muscles
  • Slide 4
  • Thoracic Cage Muscles Muscle NameFunctionDescribe movements OriginInsertion Longissimus Lateral to spinalis AgonistLaterally Flexes and extends the spine Cervical, Thoracic, Lumbar vertebrae Mastoid process & cervical vertebrae Spinalis Most medial attaches to vertebrae AgonistLaterally Flexes and extends the spine Cervical, Thoracic, Lumbar vertebrae Mastoid process & cervical vertebrae Illiocostalis Most lateral AgonistLaterally Flexes and extends the spine Saccrum, Lumbar vertebrae, Ribs Cervical vertebrae & Ribs
  • Slide 5
  • Back Muscles
  • Slide 6
  • Thoracic Cage Muscles Muscle NameFunctionDescribe movements OriginInsertion Diaphragm Anatomical Divider AgonistDecreases pressure in the thoracic cavity Sternum, Ribs, Lumbar vertebrae Central tendon Intercostals Muscles in between ribs AgonistElevates, Depresses ribs Inferior aspect of all ribs Superior aspect of all ribs Transverse Thoracis Triangle muscles under ab wall AgonistPulls abdominal wall invward Sternum, Xiphoid process Cartilidge of ribs 2-6
  • Slide 7
  • Thoracic Cage
  • Slide 8
  • Abdominal Muscles Muscle NameFunctionDescribe movements OriginInsertion Rectus Abdominus Wash board look AgonistFlex trunk, Aids in some expiration Child birth Symphysis pubis & pubic crest Xiphoid Process Inferior ribs External ObliquesAgonistFlex and rotate the vertebral column Lower eight ribs Iliac Crest, Pubis Quadratus Lumborum Deep muscle AgonistExtend and laterally bends the vertebral column Iliac Crest and Lumbar vertebra 12 th Rib and upper lumbar vertebrae
  • Slide 9
  • Abdominals
  • Slide 10
  • Moving Upper Limb Muscle NameFunctionDescribe movements OriginInsertion Pectoralis Major Thick Muscles covering the chest Prime Mover Internal rotation, adduction and flexion of the arm Clavicle, Sternum, Costal cartilage of first 6 ribs. Intertubercular groove Latissimus Dorsi Lats V shape Prime Mover Adductor, Extensor and internal rotator of the arm Lower Thoracic and Lumber verts. Iliac Crest and sacrum Humerus
  • Slide 11
  • Rotator Cuff Muscle NameFunctionDescribe movements OriginInsertion SupraspinatusAgonistStabilize shoulder joint. Abducts shoulder Above scapular spine (supraspinous fossa) Greater Tubercle of Humerus InfraspinatusAgonistStabilize shoulder joint. Lateral rotation Below scapular spine (infraspinous fossa) Greater Tubercle of Humerus Teres MinorAgonistStabilize shoulder joint. Lateral rotation. Lateral border of scapula Greater Tubercle of Humerus SubscapularisStabilizerRotates medially and stabilizes shoulder Iliac Crest and Lumbar vertebra Lesser Tubercle of Humerus
  • Slide 12
  • Slide 13
  • Scapular Muscles Muscle NameFunctionDescribe movements OriginInsertion Trapezius AgonistScapular elevation, adduction, retraction, upward rotation & extends neck Occipital bone, Cervical & thoracic vertebrae Spine of Scapula, acromion process &clavicle Rhomboids Major & Minor AgonistAssist Traps in downward rotation of scapular &adduction of scapula Maj. T2-T5 Min. C1-T1 Medial border of the scapula Levator Scapulae AgonistElevates scapulaBase of skull & upper cervical vertebrae Upper medial border of scapula Serratus anterior StabilizerUpward rotation & abduction of the scapula Ribs 1-8Medial border of the scapula
  • Slide 14
  • Slide 15
  • Scapular Muscles cont. Muscle NameFunctionDescribe movements OriginInsertion Pectoralis Minor AgonistElevates ribs & Depresses Scapula Ribs 3,4,5Coracoid process
  • Slide 16
  • Muscles that move Humerus Muscle NameFunctionDescribe movements OriginInsertion Deltoids Three heads Anterior, lateral, posterior AgonistLaterally abducts arms, Medial and lateral rotation From the clavicle to the acromion to scapular spine Humerus (Deltoid tuberosity) Coracobrachialis AgonistFlexor and arm adductor Coracoid Process Humerus Teres Major AgonistMedial rotator and adductor Lateral Border of the scapula Humerus
  • Slide 17
  • Slide 18
  • Elbow Flexors & Extensors Muscle NameFunctionDescribe movements OriginInsertion Bicep Brachii AgonistSupinator and flexor of the arm 2 places Short head on corracoid Long Head superior glenoid fossa Radius Radial TUberosity Brachialis AgonistPronator and arem flexor Anterior surface of humerus Coronoid process Tricep Brachii AgonistArm Extensor1)Lateral head posterior humerus 2)Long Head infragleniod fossa 3)Medial head posterior humerus Olecranon Brachioradialis AgonistElbow flexor, very powerful when arm is pronated Lateral epicondyle of humerus Olecranon
  • Slide 19
  • Supination and Pronation of the Forearm Muscle NameFunctionDescribe movements OriginInsertion Pronator Quadratus AgonistPronates forearm Anterior surface of distal ulna Distal surface of radius Pronator teresAgonistPronates forearm Medial epicondyle of the humerus and the coronoid porcess Lateral mid shaft of radius SupinatorAgonistSupinates forearm Lateral epicondyle of humerus Lateral aspect of radius
  • Slide 20
  • Extrinsic Hand Muscles Muscle NameFunctionDescribe movements OriginInsertion Flexor Pronator Group AgonistPronator and flexor of the wrist and digits Medial epicondyle of the humerus Meta carpals Phalanges Extensor Supinator Group AgonistSupinator and flexor of wrist ad digits Lateral epicondyle of humerus Meta Carpals Phalanges
  • Slide 21
  • Pelvic Muscles Muscle NameFunctionDescribe movements OriginInsertion Gluteus Maximus AgonistHip extension and external rotation Illiac crest saccrum and coccyx Greater trochanter Gluteus Medius AgonistAbduction and internal rotation Anterior surface of the illiac crest Posterior surface of greater trochanter SartoriusAgonistHip Flexion Outward rotation Medial surface of the tibia
  • Slide 22
  • Gluteus Max, Med, Min
  • Slide 23
  • Hip Adductors Muscle NameFunctionDescribe movements OriginInsertion IlliopsoasAgonistHip and trunk felxion Ilium and lumbar vertebrae Lesser Trochanter of the Femur Adductor longus AgonistHip AdductionPubisFemur Adductor magnus AgonistHip adduction and extension Pubis and ischiumFemur
  • Slide 24
  • Hip Muscles
  • Slide 25
  • Quadriceps Muscle NameFunctionDescribe movements OriginInsertion Rectus Femoris AgonistKnee Extension and Hip Flexion Iliac crestPatellar Tendon Vastus Lateralis AgonistKnee ExtensionFemurPatellar Tendon Vastus intermedius AgonistKnee ExtensionFemurPatellar Tendon Vastus Medialis AgonistKnee ExtensionFemurPatellar Tendon
  • Slide 26
  • Quadriceps
  • Slide 27
  • Hamstrings Muscle NameFunctionDescribe movements OriginInsertion Bicep Femoris AgonistFlexes knee, Rotates knee externally, extends hip IschiumHead of Fibula Semimembranosus AgonistFlexes knee, Rotates knee internally, extends hip IschiumMedial tibial condyle Semitendinosus AgonistFlexes knee, Rotates knee internally IschiumMedial tibial condyle
  • Slide 28
  • Hamstrings
  • Slide 29
  • Lower Leg Muscle NameFunctionDescribe movements OriginInsertion Tibialis Anterior AgonistDorsi Flexes ankle and inverts foot Anterior shaft of tibiaMetatarsals Gastrocnemius AgonistPlantar Flexes ankle and felxes knee Medial and Lateral Condyles Calcaneous Soleus AgonistPlantar Flexes ankleFibulaCalcaneous
  • Slide 30
  • Lower Leg Muscles