Fig. 7.44 Lateral wall of the axilla.
Fig. 7.45 Posterior wall of the axilla.
Teres majorLatissimus dorsiLong head of triceps brachiiSubscapularisSuprascapular foramen• Suprascapular nerveTriangular interval • Radial nerve • Profunda brachii arteryTriangular space • Circumflex scapular arteryQuadrangular space • Axillary nerve • Posterior circumflex humeral  artery and vein
Fig. 7.46 Magnetic resonance image of the glenohumeral joint in the transverse or horizontal plane.
Glenoid cavityBiceps tendon in intertubercular sulcusSubscapularisGlenoid labrumTeres minor and infraspinatus musclesHead of humerusAnteriorPosterior
Fig. 7.47 Floor of the axilla.
Axillary sheathArmDome of skin onfloor of axillaAnterior axillary skin foldPosterior axillaryskin fold
Fig. 7.48 Contents of the axilla: muscles.
Long head of biceps brachiiShort head of biceps brachiiTendon of biceps brachiiCoracobrachialisBicipital aponeurosisTransverse humeral ligament
Fig. 7.49 Contents of the axilla: the axillary artery.
Lower border of teres majorPectoralis minorLateral margin of rib ISubclaviusSubclavian artery1st part2nd part3rd partBrachial arteryAxillary artery
Fig. 7.50 Branches of the axillary artery.
Posterior circumflex humeral artery(quadrangular space)Anterior circumflex humeral arteryProfunda brachii artery(triangular interval)Long head of triceps brachiiThoraco-acromial arterySubclaviusPectoralis minorSubscapular arterySubscapularisSuperior thoracic arteryLateral thoracic arteryCircumflex scapular branch(triangular space)Thoracodorsal arteryLatissimus dorsiTeres major
Fig. 7.51 Axillary vein.
Fig. 7.52 Brachial plexus. A. Major components in the neck and axilla. B. Schematic showing parts of the brachial plexus.
TerminalnervesCordsDivisionsTrunksRoots(anterior rami)C5C6C7C8T1SuperiorMiddleInferiorLateralPosteriorPosteriorPosteriorPosteriorMedialAnteriorAnteriorAnterior Arrangedaround 2nd part of axillary arteryBSuperior cervical sympathetic ganglionInferior cervical sympathetic ganglionMiddle cervical sympathetic ganglionGray ramuscommunicansRoots (anterior rami of C5 to T1)Trunks (superior, middle, inferior)Divisions (anterior, posterior)Cords (medial, lateral, posterior)C8C7C6C5T1Middle scalene muscleAnterior scalene tendonA
Fig. 7.53 Brachial plexus. A. Schematic showing branches of the brachial plexus. B. Relationships to the axillary artery.