Muscles

Card Set Information

Author:
jaystutz
ID:
115320
Filename:
Muscles
Updated:
2011-11-08 21:46:23
Tags:
Origin insertion action
Folders:

Description:
Muscles for Musculoskeletal anatomy
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user jaystutz on FreezingBlue Flashcards. What would you like to do?


  1. Trapezius
    • O: occiput, ligamentum nuchae, spinous processes C7 - T 12
    • I: upper- lateral clavicle, acromion process
    • middle- spine of scapula
    • lower- root of spine of scapula
    • A: upper- elevation, upward rotation of scapula
    • middle- retraction of scapula
    • lower- depression, upward rotation of scapula
  2. Rhomboids
    • O: C7 - T5 spinous processes
    • I: vertebral border between root of the spine to the inferior angle of the scapula
    • A: retraction and downward rotation of the scapula
    • -deep to trapezius
  3. Levator scapula
    • O: transverse processes of C1 - C4
    • I: vertebral border from superior angle to root of spine of scapula
    • A: elevation and downard rotation of scapula
  4. Serratus anterior
    • O: outer/lateral surface of upper eight ribs (ser"8"tus)
    • I: vertebral border of scapula (anterior surface; subscapular fossa)
    • A: protraction, upper rotation of scapula, stabilization of scapula against chest wall
    • -fingers, serrated look on ribs
  5. Pectoralis minor
    • O: ribs 3,4, and 5, anterior aspect
    • I: coracoid process of scapula
    • A: proctraction, depression, downward rotation of scapula
    • -deep to pectoralis major
  6. Latissimus dorsi
    • O: last 3-4 ribs, thoracolumbar fasica, T7 - T12 spinous processes, iliac crest, inferior angle of scapula
    • I: bicipital groove of humerus (forming posterior axilla)
    • A: extension, medial rotation, and adduction of the humerus
    • -one of largest muscles in the body, swimmer's muscle
  7. Pectoralis major
    • O: clavicular head- medial half of clavicle
    • sternal head- sternum; cartilages of upper 6 ribs
    • I: lateral lip of bicipital groove of humerus
    • A: muscle as a whole- adduction, horizontal adduction, and medial rotation of humerus
    • clavicular head- flexion of humerus to 90 deg.
    • sternal head- extension of humerus from full flexion to 90 deg
    • -makes up anterior axilla
  8. Deltoid
    • O: anterior- lateral third of clavicle
    • middle- lateral acromion
    • posterior- lateral spine of scapula
    • I: deltoid tuberosity
    • A: anterior- flexion, horizontal adduction, and medial rotation of humerus
    • middle- abduction of humerus
    • posterior- extension, lateral rotation, and horizontal abduction of humerus
  9. Supraspinatus
    • Rotator cuff - SITS
    • O: supraspinous fossa of scapula
    • I: greater tubercle of humerus (superior facet) under acromion process
    • A: abduction of shoulder, stabilizes head of humerus in glenoid fossa
  10. Infraspinatus
    • Rotator cuff - SITS
    • O: infraspinous fossa of scapula
    • I: greater tubercle of humerus (middle facet)
    • A: lateral rotation of shoulder, shoulder extension, stabilizes head of humerus in glenoid fossa
  11. Teres minor
    • Rotator cuff - SITS
    • O: upper 2/3 of axillary border of scapula
    • I: greater tubercle of humerus (inferior facet)
    • A: lateral rotation and extension of humerus, stabilizes head of humerus in glenoid fossa
  12. Subscapularis
    • Rotator cuff - SITS
    • O: subscapular fossa of scapula
    • I: lesser tubercle of humerus
    • A: medial rotation of shoulder, stabilizes head of humerus in glenoid fossa (very minor adduction)

What would you like to do?

Home > Flashcards > Print Preview