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What bones make up the Pectoral Girdle?
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What are the joints of the clavicle?
- Sternoclavicular
- Acromioclavicular
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The transition between the neck and the arm is called this
Axilla
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What makes the inlet of the axilla?
- Medial: 1st rib
- Anterior: Clavicle
- Posterior: Scapula
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What makes the anterior wall of the axilla?
- Pectoralis major
- Pectoralis minor
- Subclavius
- Clavicopectoral fascia
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What makes the posterior wall of the axilla?
- Subscapularis
- Latissimus dorsi
- Teres major
- Long head of triceps brachii
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What makes the medial wall of the axilla?
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What makes the lateral wall of the axilla?
Intertubercular sulcus
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What is the origin of the Pectoralis Major?
- Clavicular head: medial bit of clavicle
- Sternocostal head: sternum
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What is the insertion of the Pectoralis Major?
intertubercular sulcus of humerus
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Which nerves supply the Pectoralis Major?
Medial and lateral pectoral nerves
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What does the Pectoralis Major do?
- adduction
- medial rotation
- flexion of extended arm
- extension of flexed arm
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Where does the Pectoralis Minor run?
From ribs 3, 4, 5 to coracoid process of scapula
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What does the Pectoralis Minor do?
Pulls the shoulder down
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What nerve supplies the Pectoralis Minor?
Medial pectoral nerve
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What does the Subclavius do?
Stabalises the sternoclavicular joint
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What nerve supplies the Subclavius?
Nerve to the Subclavius (C5, 6)
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What does the Seratus Anterior do?
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What nerve supplies the Seratius Anterior?
Long thoracic nerve (C5, 6, 7)
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What does the Subscapularis do?
Medially rotation at glenohumeral joint
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Which nerves supply the Subscapularis?
Superior and inferior subscapular nerves
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Where does the Teres Major run?
From scapula to intertubercular sulcus of humerus
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What does the Teres Major do?
Extension and medial rotation of arm
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What nerve supplies the Teres Major
Inferior subscapularis
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What does the latissimus dorsi do?
- Adduction
- Extension
- Medial rotation
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What nerve supplies the Latissimus Dorsi?
Thoracodorsal nerve
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What are the contents of the axilla?
- Fascia
- Axillary artery
- Brachial Plexus
- Axillary Vein
- Lymphatics
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The Subclavian artery becomes this
Axillary artery
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The axillary artery starts here
lateral part of rib 1
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The axillary artery become this
Brachial artery
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The brachial artery starts here
Lower border of Teres Major
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This is a branch of the first part of AA
Superior thoracic artery
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These are branches of the second part of AA
- Thoraco-acromial
- Lateral thoracic artery
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These are branches of the third part of AA
- Subscapular artery
- Anterior circumflex humeral
- Posterior circumflex humeral
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These arteries supply the glenohumeral joint
- Anterior circumflex humeral
- Posterior circumflex humeral
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The basilic vein becomes this
Axillary vein
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The axillary vein becomes this
Subclavian vein
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The axillary vein is joined by this
Cephalic vein
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What are the branches of the Lateral Cord?
- Lateral pectoral
- Lateral branch of median nerve
- Musculotaneous
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What are the branches of the Medial Cord?
- Medial pectoral
- Medial cutaneous of arm
- Medial cutaneous of forearm
- Medial branch of median nerve
- Ulnar
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What are the branches of the Posterior Cord?
- Superior subscapular
- Thoracodorsal
- Axillary
- Radial
- Inferior Subscapular
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Groups of lymph nodes in the axilla are called this
- Pectoral
- Apical
- Central
- Humeral
- Subscapular
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These nodes mainly drain the upper limb
Humeral nodes
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These nodes drain the chest, abdominal wall and mammary glands
Pectoral nodes
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These nodes drain the back, neck and shoulders
Subclavian nodes
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