Term
| What forms the medial wall of the axilla? |
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Definition
| Thoracic wall and overlying serratus anterior |
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Term
| What forms the anterior wall? |
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Definition
| Pectoralis major and minor |
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Term
| At what anatomic landmark does the subclavian artery become the axillary artery? |
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Definition
| As it crosses the 1st rib |
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Term
| What is the largest branch of the axillary artery? |
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Definition
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Term
| What are its two major branches? |
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Definition
| Scapular circumflex & thorocodorsal |
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Term
| To insure survival of the upper limb (esp. the hand) where can the axillary artery be ligated during an emergency procedure following a traumatic bullet-induced tear in the axillary artery just below the clavicle? |
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Definition
| Any where proximal to the subscapular artery |
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Term
| What cord of the brachial plexus lies deep to the axillary artery? |
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Definition
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Term
| Name five nerves derived from the posterior cord: |
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Definition
| upper & lower subscapular, thorocodorsal, radial, axillary |
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Term
| What is the "M" of brachial plexus? |
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Definition
| lateral cord, musculocutaneous, median, medial cord, ulnar nerves |
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Term
| What component of the brachial plexus supplies the flexor region of the arm? |
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Definition
| Upper roots to make up the musculocutaneous nerve |
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Term
| What muscle group in the arm is innervated by the median nerve? |
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Definition
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Term
| What muscle group in the arm is innervated by the radial nerve? |
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Definition
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Term
| Where is the radial nerve in the arm most susceptible to trauma? |
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Definition
| Radial (spiral) groove on humerus |
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Term
| What three muscles attach to the corocoid process of the scapula? |
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Definition
| Pectoralis minor, corocobrachialis, short head of biceps brachii |
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Term
| What is the name for the most common upper brachial plexus injury? |
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Definition
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Term
| What motions are lost that cause the final positioning of the upper limb in Erbs Palsy? |
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Definition
| Flexion of elbow, lateral rotation of shoulder, some supination |
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Term
| What are the likely circumstances which cause upper brachial plexus injuries? |
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Definition
| Falls that increase the angle between neck and shoulder, or difficult baby deliveries where this space is stretched (the baby) |
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Term
| what is the name of the highest axillary lymph nodes within the axilla? |
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Definition
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Term
| How does lymph from the axilla enter circulation? |
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Definition
| The large veins in the root of the neck - near junction of internal jugular and subclavian veins |
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