Lab 2 muscles

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Author:
Anonymous
ID:
99497
Filename:
Lab 2 muscles
Updated:
2011-09-02 13:39:24
Tags:
gross muscles
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Description:
some muscles for gross lab
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  1. Deltoid (OIAIA)
    • O – lateral 1/3 of clavicle, acromion, and spine of scapula
    • I – Deltoid tuberousity of Humerous
    • A – Abducts the humerous
    • I – Axillary nerve
    • A – posterior circumflex humeral artery
  2. Infraspinatous (OIAIA)
    • O – infraspinatous fossa of the scapula
    • I – Greater tubercle of the humerous (middle facet)
    • A – Laterally rotates the humerous
    • I – suprascapular nerve
    • A – suprascapular artery
  3. (OIAIA) – Pectoralis Major
    • O – medial half of clavicle, manubruim and body of sternum, costal cartilage of ribs 2-6
    • I – crest of greater tubercle of humerus
    • A – flexes, adducts, and medially rotates the arm
    • I – medial and lateral pectoral nerves (C5-T1)
    • A – Pectoral branch of the thoracromial trunk
  4. (OIAIA) – Pectoralis minor
    • O – Ribs 3-5
    • I – Coracoid process of the scapula
    • A – draws the scapula forward, in the medial direction, and downward
    • I – medial pectoral nerve (C8-T1)
    • A – Pectoral branch of the thoracromial trunk
  5. (OIAIA) – subclavius
    • O – first rib and its cartilage
    • I – clavicle
    • A – Depresses the clavicle (brings it down and forward)
    • I – nerve to the subclavius (C5)
    • A – Clavicular branch of the thoracoacromial trunk
  6. (OIAIA) – subscapularis
    • O – medial 2/3 of the costal surface of the scapula (subscapular fossa)
    • I – lesser turburcle of the humerus (forward turburcle)
    • A – medially rotates the humerus
    • I – Upper and lower subscapular nerves (C5,6)
    • A – subscapular artery
  7. (OIAIA) – supraspinatus
    • O – supraspinatus fossa of the scapula
    • I – highest facet of the greater tubercle of the humerus
    • A – initiates abduction of the humerus
    • I – suprascapular nerve (C5,6) from the superior trunk of the brachial plexus
    • A – suprascapular artery
  8. (OIAIA) – teres minor
    • O – upper 2/3 of the lateral border of the scapula
    • I –inferior facet of the greater tubercle of the humerus
    • A – laterally rotates the humerus
    • I – axillary nerver (c5,6) from the posterior cord of the brachial pluexus
    • A – circumflex scapular artery
  9. (OIAIA) – teres major
    • O – dorsal surface of the inferior angle of the scapula
    • I – crest of the lesser tubercle of the humerus
    • A – adducts and medially rotates the humerus
    • I – lower subscapular nerve (C5, 6) from the posterior trunk of the brachial plexus
    • A – circumflex scapular artery

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