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Anatomy and Kinesiology of the Shoulder Girdle Lesson Plan: 40a Anatomy and Kinesiology of the Shoulder Girdle 5 minutes: Breath of Arrival and Attendance 20 minutes: New Muscles: rotator cuff muscles, pectoralis minor, and serratus

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  1. Anatomy and Kinesiology of the Shoulder Girdle

  2. Lesson Plan: 40a Anatomy and Kinesiology of the Shoulder Girdle • 5 minutes: Breath of Arrival and Attendance • 20 minutes: New Muscles: rotator cuff muscles, pectoralis minor, and serratus anterior • 15 minutes: Scapulothoracic Agonists • 15 minutes: Glenohumeral Agonists

  3. Classroom Rules Punctuality- everybody's time is precious: • Be ready to learn by the start of class, we'll have you out of here on time • Tardiness: arriving late, late return after breaks, leaving early The following are not allowed: • Bare feet • Side talking • Lying down • Inappropriate clothing • Food or drink except water • Phones in classrooms, clinic or bathrooms You will receive one verbal warning, then you'll have to leave the room.

  4. New Muscles Rotator Cuff Other Scapular Muscles Supraspinatus Pectoralis Minor S Infraspinatus Serratus Anterior I Teres Minor T Subscapularis S Know these OIA’s Don’t need to know these OIA’s yet

  5. Rotator Cuff Supraspinatus Subscapularis Infraspinatus Teres Minor (Teres Major) (Latissimus Dorsi) Posterior View Anterior View

  6. Supraspinatus Origin: • Supraspinous fossa of the scapula Insertion: • Greater tubercle of the humerus (superior facet) Actions: • Shoulder AB duction

  7. Supraspinatus Origin: • Supraspinous fossa of the scapula Insertion: • Greater tubercle of the humerus (superior facet) AB duction Actions: • Shoulder AB duction

  8. Infraspinatus Origin: • Infraspinous fossa of the scapula Insertion: • Greater tubercle of the humerus (middle facet) Actions: • Shoulder lateral rotation

  9. Infraspinatus Origin: • Infraspinous fossa of the scapula Insertion: • Greater tubercle of the humerus Lateral rotation (middle facet) Actions: • Shoulder lateral rotation

  10. Teres Minor Origin: • Upper axillary border of the scapula Insertion: • Greater tubercle of the humerus (inferior facet) Actions: • Shoulder lateral rotation

  11. Teres Minor Origin: • Upper axillary border of the scapula Insertion: Lateral rotation • Greater tubercle of the humerus (inferior facet) Actions: • Shoulder lateral rotation

  12. Subscapularis Origin: • Subscapular fossa of the scapula Insertion: • Lesser tubercle of the humerus Actions: • Shoulder medial rotation

  13. Subscapularis Origin: • Subscapular fossa of the scapula Insertion: • Lesser tubercle of the humerus Medial rotation Actions: • Shoulder medial rotation

  14. Rotator Cuff Supraspinatus Subscapularis Infraspinatus Teres Minor (Teres Major) (Latissimus Dorsi) Posterior View Anterior View

  15. Two other new muscles Serratus Anterior Pectoralis Major

  16. Serratus Anterior Origin: • Ribs 1-9, outer surfaces Insertion: • Vertebral border of the scapula Actions: • Scapular depression • Scapular abduction/protraction • Scapular upward rotation • Holds the scapula to the thorax

  17. Serratus Anterior Origin: • Ribs 1-9, outer surfaces Insertion: • Vertebral border of the scapula Actions: • Scapular depression • Scapular abduction/protraction • Scapular upward rotation • Holds the scapula to the thorax

  18. Serratus Anterior Depression Origin: • Ribs 1-9, outer surfaces Insertion: Abduction / Protraction • Vertebral border of the scapula Actions: • Scapular depression • Scapular abduction/protraction • Scapular upward rotation • Holds the scapula to the thorax Upward Rotation

  19. Pectoralis Minor Origin: • Ribs 3-5 Insertion: • Coracoid process of the scapula Actions: • Scapular depression • Scapular abduction/protraction • Scapular downward rotation

  20. Pectoralis Minor Depression Origin: • Ribs 3-5 Insertion: Abduction / Protraction • Coracoid process of the scapula Actions: • Scapular depression • Scapular abduction/protraction • Scapular downward rotation Downward Rotation

  21. Scapulothoracic Joint Muscles Trapezius Levator Scapula Rhomboids Serratus Anterior Pectoralis Minor

  22. Scapulothoracic Joint Muscles Levator Scapula Trapezius Rhomboids Serratus Anterior Posterior View

  23. Scapulothoracic Joint Muscles Levator Scapula Trapezius Serratus Anterior Pectoralis Minor Anterior View

  24. Agonists of the Scapulothoracic Joint

  25. Agonists of the Scapulothoracic Joint Depression Elevation 1. Lower Trapezius 1. Upper Trapezius 2. Serratus Anterior 2. Levator Scapula 3. Pectoralis Minor 3. Rhomboids

  26. Agonists of the Scapulothoracic Joint Depression Elevation 1. Lower Trapezius 1. Upper Trapezius 2. Serratus Anterior 2. Levator Scapula 3. Pectoralis Minor 3. Rhomboids

  27. Agonists of the Scapulothoracic Joint Retraction/Adduction Protraction/Abduction 1. Middle Trapezius 1. Serratus Anterior 2. Rhomboids 2. Pectoralis Minor

  28. Agonists of the Scapulothoracic Joint Retraction/Adduction Protraction/Abduction 1. Middle Trapezius 1. Serratus Anterior 2. Rhomboids 2. Pectoralis Minor

  29. Agonists of the Scapulothoracic Joint Upward Rotation Downward Rotation 1. Upper and Lower Trapezius 1. Rhomboids 2. Serratus Anterior 2. Levator Scapula 3. Pectoralis Minor

  30. Agonists of the Scapulothoracic Joint Upward Rotation Downward Rotation 1. Upper and Lower Trapezius 1. Rhomboids 2. Serratus Anterior 2. Levator Scapula 3. Pectoralis Minor

  31. Glenohumeral Joint Muscles Deltoid Pectoralis Major Latissimus Dorsi Teres Major Triceps Supraspinatus Subscapularis Infraspinatus Teres Minor

  32. Glenohumeral Joint Muscles Supraspinatus Infraspinatus Deltoid Teres Minor Teres Major Triceps Brachii Latissimus Dorsi Posterior View

  33. Glenohumeral Joint Muscles Pectoralis Major Deltoid Triceps Brachii Biceps Brachii Anterior View

  34. Agonists of the Glenohumeral Joint Flexion Extension 1. Anterior Deltoid 1. Posterior Deltoid 2. Pectoralis Major (clavicular head) 2. Latissimus Dorsi / Teres Major 3. Pectoralis Major (sternal head) 4. Triceps Brachii (long head)

  35. Agonists of the Glenohumeral Joint Flexion Extension 1. Anterior Deltoid 1. Posterior Deltoid 2. Pectoralis Major (clavicular head) 2. Latissimus Dorsi / Teres Major 3. Pectoralis Major (sternal head) 4. Triceps Brachii (long head)

  36. Agonists of the Glenohumeral Joint Abduction Adduction 1. Deltoid (all fibers) 1. Pectoralis Major 2. Supraspinatus 2. Latissimus Dorsi / Teres Major 3. Triceps Brachii (long head)

  37. Agonists of the Glenohumeral Joint Abduction Adduction 1. Deltoid (all fibers) 1. Pectoralis Major 2. Supraspinatus 2. Latissimus Dorsi / Teres Major 3. Triceps Brachii (long head)

  38. Agonists of the Glenohumeral Joint Medial Rotation Lateral Rotation 1. Anterior Deltoid 1. Posterior Deltoid 2. Subscapularis 2. Infraspinatus / Teres Minor 3. Pectoralis Major

  39. Agonists of the Glenohumeral Joint Medial Rotation Lateral Rotation 1. Anterior Deltoid 1. Posterior Deltoid 2. Subscapularis 2. Infraspinatus / Teres Minor 3. Pectoralis Major

  40. Anatomy and Kinesiology of the Shoulder Girdle

  41. Use the following slides if needed to review muscles

  42. Trapezius in context

  43. Trapezius in context

  44. Trapezius Origin: • Occiput • Ligamentum nuchae (nuchal ligament) • Spinous processes of C7-T12 Insertion: • Lateral one-third of clavicle • Acromion process • Spine of the scapula Actions: • Upper: • Elevate the scapula • Upwardly rotate the scapula • Laterally flex head and neck • Rotate head and neck to opposite side • Extend head and neck • Middle: • Adduct the scapula • Lower: • Depress the scapula • Upwardly rotate the scapula

  45. Trapezius Origin: • Occiput • Ligamentum nuchae • Spinous processes of C7-T12 Insertion: • Lateral one-third of clavicle • Acromion process • Spine of the scapula Actions: • Upper: • Elevate the scapula • Upwardly rotate the scapula • Laterally flex head and neck • Rotate head and neck to opposite side • Extend head and neck • Middle: • Adduct the scapula • Lower: • Depress the scapula • Upwardly rotate the scapula

  46. Trapezius Origin: • Occiput • Ligamentum nuchae • Spinous processes of C7-T12 Insertion: • Lateral one-third of clavicle • Acromion process • Spine of the scapula Actions: • Upper: • Elevate the scapula • Upwardly rotate the scapula • Laterally flex head and neck • Rotate head and neck to opposite side • Extend head and neck • Middle: • Adduct the scapula (retraction) • Lower: • Depress the scapula • Upwardly rotate the scapula

  47. Rhomboids in context

  48. Rhomboids Origin: • Major: • Spinous processes of T2-T5 • Minor: • Spinous processes of C7-T1 Insertion: • Major: • Medial border of scapula, between the spine and inferior angle • Minor: • Upper portion of medial border of scapula, across from the spine Actions: • Adduct the scapula • Downwardly rotate the scapula

  49. Rhomboids Origin:  Major:  Spinous processes of T2-T5 Minor:   Spinous processes of C7-T1 Insertion:  Major:  Medial border of scapula, between the spine and inferior angle  Minor:  Upper portion of medial border of scapula, across from the spine Actions:  Adduct the scapula (retraction)  Downwardly rotate the scapula

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