Block 1 091712 Axilla And Brachial Plexus

Front 1

What forms the borders of the axilla?

Back 1

Apex opening: clavicle, superior border of scapula, 1st rib
base opening: skin of armpit
anterior: pectoralis minor and major, subclavius, clavipectoral fascia
Medial: serratus anterior, rib4-5
lateral: coracobrachialis, biceps brachii
posterior: subscapularis, teres major, latissimus dorsi

Front 2

What attaches the skin to the base of the axilla?

Back 2

suspensory ligament

Front 3

What has happened to a patient with 'winged scapula"

Back 3

damage to the serratus anterior innervation, long thoracic
fxn: keeps medial border of scapula close to the thoracic cage

Front 4

What are the limits of the axilla area?

Back 4

upper limit= outer border of 1st rib
lower limits= inferior border of teres major

Front 5

What branches from the 1st part of the axillary artery?

Back 5

superior thoracic artery

Front 6

What branches from the 2nd part of the axillary artery?

Back 6

thoracoacrominal trunk and lateral thoracic artery

Front 7

What branches from the 3rd part of the axillary artery?

Back 7

subscapular, anterior and posterior humeral circumflex

Front 8

What branches of the 3rd part of the axillary artery form an anastomosis?

Back 8

anterior and posterior circumflex humeral arteries

Front 9

What is the path of the subscapular artery?

Back 9

branches from the 3rd part of the axillary artery-->through triangular space where it becomes the circumflex scapular artery

Front 10

Claw hand is attributed to what type of injury?

Back 10

Lower brachial plexus injury (C8, T1)

Front 11

If there is cancer cells in the lateral side of the breast, where would you most suspect drainage that would cause metastasis?

Back 11

Pectoral nodes to axillary vein

Front 12

If there is cancer cells in the medial side of the breast, where would you most suspect drainage that would cause metastasis?

Back 12

parasternal nodes to internal thoracic vein