Shoulder region Bones Joints Muscles Vessels & Nerves

Axilla = Armpit Region between arm and chest Boundaries –Ant. = pectoral muscles –Post. = latissimus dorsi, teres major subscapularis –Medial = serratus ant. –Lateral = humerus Contents –Axillary nerves and blood vessels –Axillary lymph nodes

Superior thoracic aperture

Scalene muscles Meaning: uneven

Anterior & middle scalenes

Greek basilikos = royal (king-sized)

Latin jugulum = neck

(dorsal scapular artery)

"Army over Navy"

1.Superior thoracic: anterior axillary wall 2.Thoraco-acromial: 1. pectoral 2. deltoid, 3. clavicular 4. acromial 3.Lateral thoracic: anterior wall and breast 4.Subscapular: 1. circumflex scapular 2. thoracodorsal artery posterior and medial walls 5.anterior circumflex humeral: glenohumeral area 6.posterior circumflex : glenohumeral area