1 / 41

Shoulder region

Shoulder region. Bones Joints Muscles Vessels & Nerves. Classifications of muscles that move the shoulder. A. muscles connecting scapula to humerus B. muscles connecting trunk to scapula C. muscles connecting trunk to humerus. Biceps & Triceps tendons.

marlow
Télécharger la présentation

Shoulder region

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Shoulder region • Bones • Joints • Muscles • Vessels & Nerves

  2. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

  3. Biceps & Triceps tendons

  4. A. muscles connecting scapula to humerus • Supraspinatus • Infraspinatus • Teres minor • Subscapularis • Teres major • Coracobrachialis • Deltoid

  5. Short muscles

  6. Function:abduction

  7. Subscapularis • Function: Int. rotation

  8. Rotator Cuff

  9. Rotator cuff function: • only 25% of the humeral head is in contact with the glenoidfossa. • The rotator cuff muscles compress and depress the humeral head within the glenoidfossa.

  10. Rotator Cuff Disease photo

  11. Quiz supraspinatus infraspinatus teres minor subscapularis

  12. Teres major • Origin: • Inf angle of scapula • Insertion: • Med lip of groove • Actions: • Internal rotation and adduction of arm • Function:adduction of humerusmed rotator • Why medial?

  13. Coracobrachialis • Function:flex & adductthe shoulder joint

  14. Deltoid Origin: Clavicle, scapula Insertion: Deltoid tuberosity of humerus Actions: Abduction Anterior deltoid: internal rotation Posterior deltoid: external rotation

  15. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

  16. B. muscles connecting trunk to scapula • Serratus anterior • Levator scapula • Rhomboid major • Rhomboid minor • Trapezius • Pectoralis minor

  17. Serratus Anterior Origin: Ribs Insertion: Medial border of scapula Actions: Protraction and rotation of scapula

  18. Winged scapula

  19. Levator scapula Origin: Cervical vertebrae Insertion: Scapula Action: Elevation of the scapula

  20. Rhomboid major and minor Origin: Cervical and Thoracic vertebrae Insertion: Scapula Actions: Retraction Elevation

  21. Trapezius Origin: Occipital bone of skull, cervical and thoracic vertebrae Insertion: Clavicle and Scapula Actions: Elevation retraction

  22. Pectoralis Minor Origin: Ribs Insertion: Coracoid process of scapula Action: Depression of scapula

  23. Depression of scapula

  24. Classifications of muscles that move the shoulder • A. muscles connecting scapula to humerus • B. muscles connecting trunk to scapula • C. muscles connecting trunk to humerus

  25. C. muscles connecting trunk to humerus • Pectoralis major • Latissimusdorsi

  26. PectoralisMajor Origin: Clavicle, sternum, upper ribs Insertion: Crest of greater tubercle and lat lip Action: Add, med rotation

  27. LatissimusDorsi Origin: Vertebrae, sacrum, ilium Insertion: Medial lip Actions: Adduction and med rotation of humerus

  28. LatissimusDorsi if humerus is fixed

  29. Covering th front and back of the trunk. • The pectoralis major and latissimusdorsi both adduct and medially rotate the Humerus. • Lower edge of the pectoralis major muscle on rib 7 = upper edge of the latissimusdorsi on vertebra T7.

  30. Shoulder Girdle Movements

More Related