The Muscular System Major Movers and Shakers

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The Muscular System Major Movers and Shakers. BIOL 2400 – Anatomy and Physiology 1 Chapter 11. Temporalis. O: Temporal bone I: Coronoid process and ramus of the mandible A: Elevation of the mandible. Click for Answer. Orbicularis oculi. O: Medial wall of the orbit - PowerPoint PPT Presentation

Text of The Muscular System Major Movers and Shakers

  • The Muscular System Major Movers and ShakersBIOL 2400 Anatomy and Physiology 1Chapter 11

  • TemporalisO: Temporal bone

    I: Coronoid process and ramus of the mandible

    A: Elevation of the mandible

  • OrbicularisoculiO: Medial wall of the orbitI: Medial wall of the orbitA: Closes the eyelid

  • OrbicularisorisO: Opening of the mouthI: The skin at the cornersof the mouthA: Closes the mouth

  • MasseterO: Maxilla and the anterior portion of thezygomatic archI: Angle and the ramus of the mandible.A: Elevation of the mandible

  • ZygomaticusmajorO: Zygomatic boneI: The skin at the corners of the mouth and the orbicularis orisA: Elevates the skin at the corners of the mouth (smiling)

  • Depressor angulioris

    O: Anterior 1/3 of the body of the mandible, lateral to the mental foramenI: Angle of the mouthA: Draws the angle of the mouth laterally and inferiorly, as in opening the mouth

  • SupraspinatusO: The supraspinous fossa of the scapula

    I: The greater tubercle of the humerus

    A: Weak ABduction of the shoulder joint

  • InfraspinatusO: The infraspinous fossa of the scapula

    I: The greater tubercle of the humerusA: Lateral rotation of the humerus

  • TeresminorO: Inferior lateral border of the scapula

    I: The greater tubercle of the humerus

    A: Lateral rotation of the humerus

  • PectoralisminorO: Ribs 3 through 5I: The coracoid process of the scapula

    A: Protraction of the scapula

  • RhomboidmajorO: The spinous processes of T2 through T5I: The vertebral border of the scapula, inferior to the spineA: Retraction of the scapula

  • RhomboidminorO: The spinous processes of C7 through T1I: The vertebral border of the scapula, superior to the spineA: Retraction of the scapula

  • LevatorscapulaeO: The transverse processesof C1 through C4I: The superior angle of the scapulaA: Elevation of the scapula

  • SupinatorO: The lateral epicondyle of the humerus

    I: The lateral surface of the proximal third of the radius

    A: Supination of the forearm

  • PronatorteresO: The medial epicondyle of the humerus and the coronoid process of the ulna

    I: The midlateral surface of the radius

    A: Pronation of the forearm

  • TricepsbrachiiO: Long head: the inferior margin of the Glenoid fossaLateral head: the lateral, posterior surface of the humerusMedial head: the posterior surface of the humerusI: The olecranon of the ulnaA: Extension of the elbow joint

  • BrachialisO: The distal, anterior surface of the humerusI: The coronoid process of the ulnaA: Flexion of the elbow joint

  • BicepsbrachiiO: Long head: superior margin of the Glenoid fossaShort head: the coracoid process of the scapulaI: The radial tuberosity of the radiusA: Flexion of the elbow joint

  • ExternalobliquesO: The last eight (8) ribsI: The iliac crest and the linea albaA: Both: flexion of the vertebral column Single: lateral flexion of the vertebral column

  • LatissimusdorsiO: Spinous processes of T6 through L5, the iliac crest, the sacrum and ribs 9 through 12

    I:The intertubercular groove of the humerus

    A: ADduction of the humerus

  • PectoralismajorO:The clavicle, the sternum and the costal cartilage of ribs 2 through 6

    I: The greater tubercle of the humerus

    A: ADduction of the humerus

  • TrapeziusO: The occipital bone and the spinous processes of C7 through T12

    I: The clavicle, the acromion and the spine of the scapula

    A: Stabilizes the scapula Superior fibers: elevation of the scapula Intermediate fibers: retraction of the scapula Inferior fibers: depression of the scapula

  • Iliopsoas-IliacusO: The iliac fossa and the sacrum

    I: The lesser trochanter of the femur

    A: Flexion of the hip joint

  • Iliopsoas-Psoas majorO: The transverse processes and bodies of L1 through L5

    I: The lesser trochanter of the femur

    A: Flexion of the hip joint

  • AdductorlongusO: The pubic crest and the symphysis pubis

    I: The linea aspera of the femur

    A: ADduction of the hip joint

  • Fibularis(Peroneus)longusO: The lateral condyle of the tibia and the head and shaft of the fibula

    I: The first metatarsal and the medial cuneiform

    A: Plantar flexion of the ankle joint

  • SoleusO: The head of the fibula and the medial shaft of the tibiaI: The calcaneus by way of the Achilles tendonA: Plantar flexion of the ankle joint

  • GastrocnemiusO: The medial and lateral condyles of the femurI: The calcaneus by way of the Achilles tendon

    A: Plantar flexion of the ankle joint

  • TibialisanteriorO: The lateral condyle and the shaft of the tibiaI: The first metatarsal and the medial cuneiformA: Dorsiflexion of the ankle joint

  • QuadricepsfemorisMade of four muscles:Rectus femorisVastus lateralisVastus medialisVastus intermedius

  • QuadricepsfemorisRectus FemorisO: The anterior inferior iliac spine (AIIS)I: The tibial tuberosity via the patellar ligamentA: Extension of the knee jointVastus LateralisO: The greater trochanter and the linea aspera of the femur

    I: The tibial tuberosity via the patellar ligament

    A: Extension of the knee joint

  • QuadricepsfemorisVastus MedialisO: The linea aspera of the femur

    I: The tibial tuberosity via the patellar ligament

    A: Extension of the knee jointVastus IntermediusO: The anterior and lateral surfaces of the shaft of the femur

    I: The tibial tuberosity via the patellar ligament

    A: Extension of the knee joint

  • SartoriusO: The anterior superior iliac spine (ASIS)

    I: The medial surface of the proximal shaft of the tibia

    A: ABduction of the hip joint

  • GluteusmediusO: The iliumI: The greater trochanter of the femurA: ABduction of the hip joint

  • BicepsfemorisO: Long head: the ischial tuberosityShort head: the linea aspera of the femur

    I: The lateral condyle of the tibia and the head of the fibula

    A: Flexion of the knee joint

  • GluteusmaximusO: The iliac crest, the sacrum and the coccyxI: The gluteal tuberosity of the femurA: Extension of the hip joint

  • AnteriordeltoidO: The clavicle, the acromion and the spine of the scapulaI: The deltoid tuberosity

    A: ABduction of the shoulder joint Anterior head: flexion of the shoulder joint Lateral head: Abduction of the shoulder joint Posterior head: extension of the shoulder joint

  • PosteriordeltoidO: The clavicle, the acromion and the spine of the scapulaI: The deltoid tuberosity

    A: ABduction of the shoulder joint Anterior head: flexion of the shoulder joint Lateral head: ABduction of the shoulder joint Posterior head: extension of the shoulder joint

  • RectusabdominisO: The pubic crest and the symphysis pubisI: Costal cartilage of ribs 5, 6 and 7A: Flexion of the vertebral column

  • Sternocleidomastoid

  • SternocleidomastoidO: The sternum and the clavicleI: The mastoid process of the temporal boneA: Both: flexion of the cervical vertebrae Single: rotation of the head to the opposite side

  • PlatysmaO: Fascia over the deltoidand pectoralis major musclesI: Mandible, muscles aroundthe angle of the mouth, and the skin of the lower faceA: Depression of the mandible