anatomy UE part 1-2

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Author:
merazar15
ID:
234837
Filename:
anatomy UE part 1-2
Updated:
2013-09-14 20:18:23
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part 1-2
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  1. muscles of the shoulder:
    • coracobrachialis
    • teres major
    • deltoid
  2. attachment & function of the coracobrachialis:
    • attaches coracoid process to humerus
    • function: to flex, internally rotate

    runs from scapula to humerus
  3. attachment and function of the teres major:
    • attaches to scapula & internal aspect of humerus (crest of lesser tubercle)
    • function:¬†adductor of humerus
  4. attachment and function of the deltoid:
    • arises from the spine of the scapula, acromium, & lateral 1/3rd of clavicle & inserts on deltoid tuberosity
    • funct: (3D arm swing)
    • ant fibers: flexors
    • post fibers: extensors
    • lateral fibers: abductors
  5. attachment and function of serratus anterior:
    • attaches to 1st 8 ribs & the¬†medial underside border of the scapula
    • funct: protraction (whole muscle)
  6. 4 muscles that attach to back of scapula:
    • levator scapula
    • rhomboid major & minor
    • trapezius
    • pec minor
  7. function of the levator scapula:
    ipsilaterally elevate the scapular
  8. if scapula was held in check & levator scapula contracted what would happen:
    extension & lateral flexion
  9. attachment & funct of rhomboid minor & major:
    • c4-T5 & to medial border of scapula
    • funct: to elevate & retract the scapula
  10. attachment and function of the trapezius:
    • upper part attaches to occiput, nuchal ligament, & from T1-T3 in the midline, & lateral 1/3 of the clavicle
    • lower part attaches T4-T12 & converges to attach on lower edge of the spine of the scapula
    • funct: when whole trap contracts: retracts scapula.
    • when upper part contracts: elevates scapula
  11. attachment & function of pec minor:
    • attaches from 2-4 ribs to the coronoid process
    • funct: depresses scapula
  12. attachment & function of subclavius:
    • attaches 1st rib to clavicle
    • funct: debatable, but stabilizes clavicle to 1st rib
  13. attachment & function of omohyoid:
    • attaches hyoid bone & inserts on upper edge of spine of scapula
    • funct: depress hyoid bone & larynx
  14. what are the 3 large external muscles:
    • pec major
    • lat dorsi
    • deltoid
  15. what 2 muscles define the posterior & anterior borders of the axilla?
    pec major and the lat dorsi
  16. attachment and function of the pec major:
    • attaches from lateral border of the sternum, medial 1/3rd of clavicle & 2nd-6th costal cartilages & inserting on anterior edge of bicipital groove
    • funct: adductor of the humerus
    • when adducting is held in check it also produces internal rotation of humerus
  17. attachment and function of the lat:
    • arising under the tail of the trap from T7-sacrum & posterior aspect of iliac crest & some fibers arising from lower 4 ribs (& occasionally tip of scapula) & inserts on posterior edge of bicipital groove
    • funct: adductor of humerus, depressor of scapula
  18. describe the fiber arrangement of the lat:
    the inferior fibers become the superior fibers. it spirals around & under Teres major
  19. attachment and function of the deltoid:
    • arises from spine of scapula, acromium, & lateral 1/3rd of clavicle & inserts on deltoid tuberosity
    • funct: (3D arm swing)
    • ant fibers: flexors
    • post fibers: extensors
    • lat fibers: abductors

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