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Re: Axilla and Brachial Plexus - True/False

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Posted by lae2 on November 02, 2017 at 18:09:38:

In Reply to: Re: Axilla and Brachial Plexus - True/False posted by Daniel on November 01, 2017 at 19:25:51:

: : Axilla and Brachial Plexus - True/False

: : 1. Two muscles take origin from the coracoid process and one muscle inserts at the coracoid process.
: T - Agreed.
: : 2. Pectoralis minor depresses the scapula and adducts at the glenohumeral joint.
: F, depress and protract scapula. - Agreed.
: : 3. At the anterior boundary of the axilla the lateral pectoral nerve is medial to the medial pectoral nerve.
: T - Agreed.
: : 4. The latissimus dorsi inserts on the intertubercular sulcus; medial to pectoralis major and lateral to pectoralis minor.
: T, however minor inserts on coracoid and does not insert on IT sulcus Disagree. lateral to teres major.
: : 5. The long thoracic nerve is a branch of the posterior cord of the brachial plexus and innervates the serratus anterior.
: T, long thoracic is a branch of both Posterior and lateral cord roots - DisAgreed. Roots 567
: : 6. The cords of the brachial plexus are named according to their relationships to the coracoid process.
: F, axillary artery - Agreed.
: : 7. Severance of the posterior cord that affects all branches eliminates lateral rotation at the glenohumeral joint.
: F, supra scapular n is a branch of lateral cord and innervates infraspinatus - Agreed.
: : 8. Severance of the posterior cord results in a flexed and adducted resting position of the wrist.
: ST (seems true). - Agreed.
: : 9. Severance of the lateral cord of the brachial plexus entirely eliminates flexion at the elbow.
: F, brachioradialis is innervated by radial n - Agreed. And more
: : 10. Severance of the lateral and medial cords of the brachial plexus results in an extended and abducted resting position of the wrist.
: T - Agreed.
: : 11. Severance of the radial nerve at the spiral grove results in a flexed wrist and loss of extension at the elbow.
: F, triceps n branches proximal to groove. also long head triceps is supposedly innervated by axillary n. - Agreed.
: : 12. The anterior and posterior humeral circumflex arteries circle the anatomical neck of the humerus.
: F, surgical - Agreed.
: : 13. Distal to the circumflex scapular artery the subscapular artery continues as the thoracodorsal artery.
: T - Agreed.
: : 14. The profunda brachii artery passes through the triangular space to arrive at the infraspinous fossa.
: F, triangular interval - Agreed. Not infraspinous fossa
: : 15. The musculocutaneous nerve passes through the short head of the biceps as it enters the posterior arm.
: F - Agreed.
: : 16. The C5 root of the brachial plexus elaborates the dorsal scapular nerve and contributes to the phrenic and long thoracic nerves.
: T - Agreed.
: : 17. The superior trunk of the brachial plexus elaborates the suprascapular nerve.
: T - Agreed.
: : 18. Erb's palsy primarily affects the shoulder and Klumke's palsy primarily affects intrinsic muscles of the hand.
: T - Agreed.
: : 19. Severance of the ulnar at the axilla results in the ulnar paradox.
: T, more n more proximal the injury the less damage, more distal is more debilitating - Agreed. but less deformity and more debilitating.
: : 20. Severance of the median nerve in the axilla affects flexion at the elbow.
: F, wrist. - DisAgreed. Pronator teres and more.




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