Muslces2

Card Set Information

Author:
jessie5592
ID:
7364
Filename:
Muslces2
Updated:
2010-02-18 23:40:16
Tags:
muscles of the neck back and scapula
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Description:
Muscles of the abdomen, pectoral girdle, and back (scapula)
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  1. Pectoralis major
    • Origin: Ribs 3-5
    • Insertion: Corocoid process of the scapula
    • Action: Depresses scapula, downwardly rotates scapula
  2. External Intercostals
    • Origin: Inferior border of the rib
    • Insertion: Superior border of the rib
    • Action: Elevates rib cage
  3. Internal intercostals
    • Origin: Superior border of the ribs
    • Insertion: Inferior boarder of the ribs
    • Action: Depresses rib cage
  4. Serratus anterior
    • Origin: Ribs 1-8
    • Insertion: Vertibral border of the scapula
    • Action: Rotates inferior agle os scapula laterally
  5. External obliques
    • Origin: Ribs 5-12
    • Insertion: Linea alba, pubic crest, pubis tubercle, iliac crest
    • Action: Flexes vertibral column, compresses abdominal wall
  6. Internal obliques
    • Origin: Lumbar fascia, iliac crest, inguinal ligament
    • Insertion: Linea alba, pubic crest
    • Action: Flexes vertibral column, compresses abdominal wall
  7. Rectus abdominus
    • Origin: Pubic crest, pubic symphysis
    • Insertion: Xiphoid process, ribs 5-7
    • Action: Flexes lumbar region of vertibral column, rotates lumbar region of vertibral column
  8. Trapezius
    • Origin: Occipital bone, spinous process of C7-T12
    • Insertion: Lateral 1/3 of clavicle, spine of scapula, acromion process of scapula
    • Action: Elevates scapula, depresses scapula, rotates scapula, adducts scapula
  9. Deltoid
    • Origin: Lateral 1/3 of clavical, spine of scapula, acromion process of scapula
    • Insertion: Deltoid tuberosity of the humerus
    • Action: Abducts arm, flexes arm at shoulder, rotates arm medially, extends arm at shoulder, rotates arm laterally
  10. Latissimus dorsi
    • Origin: Spinous process of T7-T12, ribs 9-12, iliac crest, inferior angle of scapula
    • Insertion: Intertubercular groove of the humerous
    • Action: Extends arm at shoulder, adducts arm, rotates arm medially
  11. Pectoalis major
    • Origin: Sternal end of the clavicle, ribs 1-6
    • Insertion: Greater tubercle of humerus
    • Action: Flexes arm at shoulder, rotates arm medially, adducts arm
  12. Lavator scapula(e)
    • Origin: Transverse processes of C1-C4
    • Insertion: Vertebral border of the scapula
    • Action: Elevates scapula, downwardly rotates scapula
  13. Rhomboid major
    • Origin: Spinous process of T2-T5
    • Insertion: Vertibral border of the scapula
    • Action: Adducts scapula, downwardly rotates scapula
  14. Rhomboid minor
    • Origin: Spinous processes of C7-T1
    • Insertion: Vertibral border of the scapula
    • Action: Adducts scapula, downwardly rotates scapula
  15. Supraspinatus
    • Origin: Supraspinous fossa of the scapula
    • Insertion: Greater tubricle of the humerus
    • Action: Abducts arm
  16. Infraspinatus
    • Origin: Infraspinous fossa of the scapula
    • Insertion: Greater tubercle of the humerus
    • Action: Rotates arm laterally
  17. Teres major
    • Origin: Inferior angle of the scapula
    • Insertion: Lesser tubercle of the humerous
    • Action: Adducts arm, extends arm at shoulder, rotates arm medially
  18. Teres minor
    • Origin: Lateral border of the scapula
    • Insertion: Greater tubercle of humerus
    • Action: Rotates arm laterally
  19. Subscapularis
    • Origin: Subscapular fossa of the scapula
    • Insertion: Lesser tubercle of the humerus
    • Action: Rotates arm medially

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