Muscular System

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Muscular System for occupational therapy students

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Muscular System

  1. 1. Muscular Systemfor students of occupational therapy Anatomy & physiology 2 Lecturer: Mohammed Subhi El-Lulu
  2. 2. Muscle Types Skeletal Cardiac Smooth2 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  3. 3. Skeletal muscle characteristics Attach bone by tendon Many nuclei Striated Voluntary Surrounded By C.T3 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  4. 4. Function of Skeletal Muscle Produce Movement Maintain Posture Stabilize Joint Generate Heat4 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  5. 5. Naming of skeletal muscle Size Location Direction Origin & Insertion Shape No. of Origins5 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  6. 6. 1- Direction of muscle Relative to the Midline RECTUS means parallel to midline • Rectus Abdominus TRANSVERSE means perpendicular to midline • Transverse Abdominus OBLIQUE means diagonal to midline • External Oblique6 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  7. 7. 2- Location of muscle Structure near which a muscle is found Muscle near frontal bone = Frontalis Muscle near the Tibia = Tibialis anterior7 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  8. 8. 3- Size of muscle MAXIMUS means largest • Gluteus Maximus MINIMUS means smallest • Gluteus Minimus LONGUS means longest • Fibularis Longus BREVIS means short • Fibularis Brevis TERTIUS means shortest Fibularis Tertius8 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  9. 9. 4- Number of origins of muscleNumber of tendons of origin BICEPS means two • Biceps Brachii TRICEPS means three • Triceps Brachii QUADRICEPS means four  Quadriceps Femoris9 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  10. 10. 5- Shape of muscle  DELTOID means having a triangular shape  TRAPEZIUS means having a trapezoid shape  SERRATUS means having a saw-toothed shape (Serratus Ant.) RHOMBOIDEUS meanshaving a diamond shape(Rhomboid Major 10 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  11. 11. 6- Origin & Insertion (Origin): attached to less or immovable bone. (Insertion): attached to the movable bone.  STERNOCLEIDOMASTOID: attaches to the Sternum, Clavicle, and Mastoid Process  ILIO COSTALIS: attaches to the ilium & ribs 11 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  12. 12. Function of muscleNAME ACTION EXAMPLEFLEXOR Decrease ang’hile at a joint Flexor Carpi RadialisEXTENSOR Increase angle at a joint Extensor Carpi UlnarisABDUCTOR Move bone away from midline Abductor Pollicis LongusADDUCTOR Move bone toward midline Adductor LongusLEVATOR Produces upward movement Levator ScapulaeDEPRESSOR Produces downward movement Depressor Labii InferiorisSUPINATOR Turn palm upward/anteriorly SupinatorPRONATOR Turn palm downward/posteriorly Pronator Teres12 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  13. 13. Body MusclesExtremity Movement
  14. 14. 6 muscle groups of head and neck Eye Facial Mastication Tongue Neck Pharynx14 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  15. 15. 15 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  16. 16. Muscles of vertebral columnSpinal Flexor TransversospinalisSuperficial Spinal Extensor Spinalis group Longissimus group Iliocostalis groupDeep Spinal Extensor Semispinalis group Multifidus muscle Interspinalis muscles Intertransversarii muscles Rotatores musclesOblique Muscles compress underlying structures rotate vertebral columnRectus Muscles flex vertebral column oppose erector spinae 16 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  17. 17. 17 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  18. 18. 18 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  19. 19. 19 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  20. 20. 6 muscles that position the Pectoral GirdleTrapezius Rhomboid Subclavius • Serratus • Levator • Pectoralis Scapulae Minor20 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  21. 21. Trapezius, Rhomboid, Levator Scapulae21 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  22. 22. Serratus, Pectoralis minor22 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  23. 23. Subclavius23 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  24. 24. Muscles that move the Arm Deltoid Subscapularis Supra Teres major spinatus Rotator Cuff Infraspinatus Latissimus Teres minor dorsi Coraco brachialis24 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  25. 25. Deltoid “major abductor”25 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  26. 26. Supraspinatus “assists deltoid”26 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  27. 27. Subscapularis & teres major“medial rotation at shoulder27 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  28. 28. Infraspinatus & teres minor“lateral rotation at shoulder”28 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  29. 29. Coracobrachialis“flexion & adduction at shoulder”29 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  30. 30. Pectoralis major “flexion of shoulder”30 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  31. 31. Latissmus dorsi“Extension of shoulder joint”31 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  32. 32. Rotator Cuff32 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  33. 33. 13 muscles that move Forearm & Hand • Biceps brachii “flex elbow, stabilize joint”A • Triceps brachii “extend elbow” • Brachialis and brachioradialis “flex elbow”B • Anconeus “opposes brachialis” • Palmaris longus ”flex wrist” • Flexor carpi ulnaris ”flex/ adduct wrist”C • Flexor carpi redialis “flex/ abduct wrist” • Extensor carpi radialis “extend/ abduct wrist”D • Extensor carpi ulnaris “extend/ adduct wrist” • Pronator teres and supinator “rotate radialis”E • Pronator quadratus “assist pronator teres”33 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  34. 34. 34 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  35. 35. Biceps brachii “flex elbow, stabilize joint”35 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  36. 36. Triceps brachii “extend elbow”36 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  37. 37. Brachialis and brachioradialis “flex elbow”37 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  38. 38. Anconeus “opposes brachialis”38 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  39. 39. Palmaris longus ”flex wrist”Flexor carpi ulnaris ”flex/ adduct wrist”Flexor carpi redialis “flex/ abduct wrist39 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  40. 40. Extensor carpi radialis “extend/ abduct wrist”Extensor carpi ulnaris “extend/ adduct wrist”40 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  41. 41. Pronator teres and supinator “rotate radialis”Pronator quadratus “assist pronator teres”41 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  42. 42. Muscles that move the hand and figures42 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  43. 43. Posterior Extensor Retinaculum43 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  44. 44. Anterior Flexor Reticulum44 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  45. 45. Muscles that move Lower Limb45
  46. 46. Thigh and Gluteal MusclesoCover lateral surface of ilia. Gluteus maximus:  largest, most posterior gluteal muscle  produces extension and lateral rotation at hip Tensor fasciae latae:  works with gluteus maximus  stabilizes iliotibial tract Gluteus medius and gluteus minimus:  originate anterior to gluteus maximus insert on trochanter 46 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  47. 47. Muscles of Thigh47 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  48. 48. Trochanter48 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  49. 49. (6) Lateral Rotators (Piriformis, Obturator)49 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  50. 50. Adductors of Thigh50 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  51. 51. Adductors of Thigh Pectineus Gracilis51 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  52. 52. Muscles thatmove the Leg Flexors of Knee Biceps femoris Semimembranosus- Semitendinosus Sartorius: Popliteus:52 Mohammed Subhi El-Lulu mohdlulu@hotmail.com
  53. 53. Muscles thatmove the Leg Extensors of KneeQuadriceps Femoris 3 vastus Rectus femoris53 Mohammed Subhi El-Lulu mohdlulu@hotmail.com

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