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Student's Guide To The Skeletal Muscles of the Body

Student's Guide To The Skeletal Muscles of the Body. Provided By. Michael R. Cryder, M.S. Click icon to start. MAIN MENU. Muscular System Test. Muscular System Tutorial. Menu. Menu. Click on icon to start. Click on icon to start. ESCAPE. TEST MENU. Upper Arm. Forearm.

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Student's Guide To The Skeletal Muscles of the Body

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  1. Student's Guide To The Skeletal Muscles of the Body Provided By Michael R. Cryder, M.S. Click icon to start

  2. MAIN MENU Muscular System Test Muscular System Tutorial Menu Menu Click on icon to start Click on icon to start ESCAPE

  3. TEST MENU Upper Arm Forearm Shoulder Head & Neck Thorax Abdomen Hand, Wrist & Fingers Click on an icon to start Leg Foot MAIN MENU Thigh ESCAPE

  4. HEAD & NECK NEXT INFO MENU MUSCLES ESCAPE

  5. NAME: Frontalis ORIGIN: Aponeurosis INSERTION: Skin of eyebrows NEXT ACTION: BACK INFO • Elevates eyebrows • Wrinkles forehead MENU ESCAPE

  6. NAME: Orbicularis oculi ORIGIN: Frontal & maxillary bones INSERTION: Tissue of eyelids NEXT ACTION: BACK INFO Closes eyes as in blinking MENU ESCAPE

  7. NAME: Buccinator ORIGIN: Maxilla & mandible INSERTION: Orbicularis oris NEXT ACTION: BACK INFO Compresses cheeks inward MENU ESCAPE

  8. NAME: Zygomaticus ORIGIN: Zygomatic bone INSERTION: Skin & muscle at corner of mouth NEXT ACTION: BACK INFO Raises corners of mouth as when smiling MENU ESCAPE

  9. NAME: Orbicularis oris ORIGIN: Maxilla & mandible INSERTION: Skin & muscle around mouth NEXT ACTION: BACK INFO Puckers & closes lips MENU ESCAPE

  10. NAME: Temporalis ORIGIN: Temporal bone INSERTION: Mandible (coronoid process) NEXT ACTION: BACK INFO Elevates mandible MENU ESCAPE

  11. NAME: Masseter ORIGIN: Zygomatic arch INSERTION: Mandible (ramus) NEXT ACTION: BACK INFO Elevates mandible MENU ESCAPE

  12. NAME: Sternocleidomastoid ORIGIN: • Sternum (manubrium) • Clavicle INSERTION: Temporal bone (mastoid process) NEXT ACTION: BACK INFO • Rotates head to opposite side (one) • Flexes head (both) MENU ESCAPE

  13. MUSCLES THAT MOVE NEXT INFO MENU THE SHOULDER ESCAPE

  14. NAME: Trapezius ORIGIN: • Occipital bone • Vertebrae T1-T12 INSERTION: • Lateral clavicle • Scapula (spine & acromion process) NEXT ACTION: BACK INFO • Elevates & adducts scapula • Extends neck MENU ESCAPE

  15. NAME: Levator scapulae ORIGIN: Vertebrae C1-C4 INSERTION: Superior scapula NEXT ACTION: BACK INFO Elevates & adducts scapula (at superior angle) MENU ESCAPE

  16. NAME: • Rhomboideus minor (top) • Rhomboideus major (bottom) ORIGIN: Vertebrae C7-T5 INSERTION: Medial border of scapula NEXT ACTION: BACK INFO Elevates & adducts scapula MENU ESCAPE

  17. NAME: Pectoralis minor ORIGIN: 3rd, 4th, & 5th ribs INSERTION: Coracoid process of scapula NEXT ACTION: BACK INFO Pulls scapula forward & downward MENU ESCAPE

  18. NAME: Serratus anterior ORIGIN: Upper eight ribs INSERTION: Scapula (anterior vertebral border) NEXT ACTION: BACK INFO Pulls scapula against chest wall MENU ESCAPE

  19. NAME: Supraspinatus ORIGIN: Scapula (supraspinous fossa) INSERTION: Humerus (greater tubercle) NEXT ACTION: BACK INFO Holds head of humerus stable in glenoid cavity MENU ESCAPE

  20. NAME: Infraspinatus ORIGIN: Scapula (infraspinous fossa) INSERTION: Humerus (greater tubercle) NEXT ACTION: BACK INFO Holds head of humerus stable in glenoid cavity MENU ESCAPE

  21. NAME: Teres minor ORIGIN: Scapula (axillary border) INSERTION: Humerus (greater tubercle) NEXT ACTION: BACK INFO Holds head of humerus stable in glenoid cavity MENU ESCAPE

  22. NAME: Subscapularis ORIGIN: Scapula (subscapular fossa) INSERTION: Humerus (lesser tubercle) NEXT ACTION: BACK ANTERIOR INFO Holds head of humerus stable in glenoid cavity MENU ESCAPE

  23. MUSCLES THAT MOVE NEXT INFO MENU THE ARM ESCAPE

  24. NAME: Pectoralis major ORIGIN: Clavicle & sternum INSERTION: Humerus (greater tubercle) NEXT ACTION: BACK INFO Adducts, flexes & medially rotates humerus MENU ESCAPE

  25. NAME: Deltoid ORIGIN: • Lateral clavicle • Scapula (spine & acromion • process INSERTION: Humerus (deltoid tuberosity) NEXT ACTION: BACK POSTERIOR INFO Abducts, flexes & medially rotates humerus MENU ESCAPE

  26. NAME: Coracobrachialis ORIGIN: Scapula (coracoid process) INSERTION: Humerus (shaft) NEXT ACTION: BACK INFO Adducts & flexes arm MENU ESCAPE

  27. NAME: Latissumus dorsi ORIGIN: • Vertebrae • Iliac crest & lower ribs INSERTION: Humerus (intertubercular groove) NEXT ACTION: BACK INFO Adducts, extends & medially rotates humerus MENU ESCAPE

  28. NAME: Teres major ORIGIN: Scapula (inferior angle & lateral border) INSERTION: Humerus (lesser tubercle) NEXT ACTION: BACK INFO Extends, adducts & medially rotates humerus MENU ESCAPE

  29. MUSCLES THAT MOVE NEXT INFO MENU THE FOREARM ESCAPE

  30. NAME: Biceps brachii ORIGIN: Scapula (coracoid process & supraglenoid tubercle INSERTION: Radius (radial tuberosity) NEXT ACTION: BACK ANTERIOR INFO Flexes forearm at elbow & supinates forearm MENU ESCAPE

  31. NAME: Brachialis ORIGIN: Humerus (anterior shaft) INSERTION: Ulna (coronoid process) NEXT ACTION: BACK INFO ANTERIOR Flexes forearm at elbow MENU ESCAPE

  32. NAME: Brachioradialis ORIGIN: Humerus (supracondylar ridge) INSERTION: Radius (styloid process) NEXT ACTION: BACK INFO Flexes forearm at elbow ANTERIOR MENU ESCAPE

  33. NAME: Triceps brachii ORIGIN: • Scapula (infraglenoid tubercle) • Posterior proximal humerus INSERTION: Ulna (olecranon process) NEXT ACTION: BACK INFO Extends forearm at elbow POSTERIOR MENU ESCAPE

  34. MUSCLES THAT MOVE NEXT INFO MENU THE WRIST, HAND & FINGERS ESCAPE

  35. NAME: Flexor carpi muscles ORIGIN: Humerus (medial epicondyle) INSERTION: Metacarpals NEXT ACTION: BACK INFO Flex hand at wrist ANTERIOR MENU ESCAPE

  36. NAME: Flexor digitorum muscles ORIGIN: • Distal humerus • Proximal radius or ulna INSERTION: Middle or distal phalanges NEXT ACTION: BACK INFO ANTERIOR Flex the fingers MENU ESCAPE

  37. NAME: Extensor carpi muscles ORIGIN: Distal, lateral humerus INSERTION: Metacarpals NEXT ACTION: BACK INFO POSTERIOR Extend hand at wrist MENU ESCAPE

  38. NAME: Extensor digitorum muscles ORIGIN: Humerus (lateral epicondyle) INSERTION: Distal phalanges NEXT ACTION: BACK INFO Extends the fingers POSTERIOR MENU ESCAPE

  39. MUSCLES OF THE NEXT INFO MENU ABDOMINAL WALL ESCAPE

  40. NAME: Rectus abdominis ORIGIN: Pubic bone (crest & symphysis) INSERTION: • Sternum (xiphoid process) • Ribs 5-7 (costal cartilages) NEXT ACTION: BACK INFO • Flexes & rotates lumbar vertebra • Stabilizes pelvis MENU ESCAPE

  41. NAME: External oblique ORIGIN: Ribs (lower 8) INSERTION: • Ilium (iliac crest) • Linea alba NEXT ACTION: BACK INFO • Aid rectus abdominis in flexing vertebrae • Lateral trunk flexion & rotation MENU ESCAPE

  42. NAME: Internal oblique ORIGIN: Ilium (iliac crest) INSERTION: Linea alba, pubic bone & lower ribs NEXT ACTION: BACK INFO • Aid rectus abdominis in flexing vertebrae • Lateral trunk flexion & rotation MENU ESCAPE

  43. NAME: Transversus abdominis ORIGIN: • Ilium (iliac crest) • Ribs (lower 6) INSERTION: Linea alba & pubic bone NEXT ACTION: BACK INFO Compresses abdomen MENU ESCAPE

  44. MUSCLES OF NEXT INFO MENU RESPIRATION ESCAPE

  45. NAME: External intercostals ORIGIN: Inferior border of rib above INSERTION: Superior border of rib below NEXT ACTION: BACK INFO • Pulls ribs towards one another to elevate the rib cage • Aid in inspiration MENU ESCAPE

  46. NAME: Internal intercostals ORIGIN: Superior border of rib above INSERTION: Inferior border of rib below NEXT ACTION: BACK INFO • Draws ribs together to depresses rib cage • Aid in expiration MENU ESCAPE

  47. NAME: Diaphragm ORIGIN: • Inferior border of rib cage & sternum • Margins of thoracic cage INSERTION: Central tendon of diaphragm NEXT ACTION: BACK INFO Contracts to cause inspiration MENU ESCAPE

  48. MUSCLES THAT MOVE NEXT INFO THE THIGH MENU ESCAPE

  49. NAME: Sartorius ORIGIN: Ilium (anterior superior iliac spine) INSERTION: Tibia (medial surface) NEXT ACTION: BACK INFO Flexes & laterally rotates thigh MENU ESCAPE

  50. NAME: Tensor fasciae latae ORIGIN: Ilium (iliac crest) INSERTION: Iliotibial tract NEXT ACTION: BACK INFO • Flexes & abducts thigh • Rotates thigh medially MENU ESCAPE

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