Axillary Anatomy

8/13/2019 Axillary Anatomy

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Laboratory 5.Axillary

Region
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BICEPS BRACHII MUSCLE longhead


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BICEPS BRACHII MUSCLE short head


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CORACOBRACHIALIS MUSCLE


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PECTORALIS MAJOR MUSCLE


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PECTORALIS MINOR MUSCLE

SERRATUS ANTERIOR MUSCLE


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SERRATUS ANTERIOR MUSCLE

the serratus anterior muscle and the long thoracic nerve, also called the nerve to theserratus anterior muscle[the scissors rest against the serratus anterior muscle and lift the longthoracic nerve]. They are found on the medial wall of the axilla.The serratus anterior musclearises from the outer surface of the upper eight ribs. It inserts into the anterior surface of themedial border of the scapula.
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SUBCLAVIUS MUSCLE


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SUBSCAPULARIS MUSCLE

It arises from the subscapular fossa on the anterior aspect of the scapula and attaches to the lessertubercle of the humerus. the upper and lower subscapular nerves that innervate the subscapularismuscle.


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ANTERIOR CIRCUMFLEX HUMERAL ARTERY


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AXILLARY 1st PART

the axillary arterywhich begins at the lateral border of the first rib as the continuation of the subclavian artery. Itis divided into three partsbased on its spacial relationship to pectoralis minor muscle. first part of the axillaryarterylies between the lateral border of the first rib and the medial border of pectoralis minor muscle

six major branches of the axillary artery(Figure 5.4). One branch arises from the first part of the artery, twofrom the second part, and three from the third part.

The branch of the first part of the axillary artery is the superior (or supreme) thoracic artery. It supplies the regionof the first and second intercostal spaces. It is often small and difficult to identify.

2 d
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AXILLARY 2nd PART

second part of the axillary arteryis posterior to the pectoralis minormuscle
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AXILLARY 3rd PART

third part of the axillary arterylies between the lateral border of the pectoralis minor muscleand inferior border of teres major muscle. As the axillary artery passes distal to the teres majormuscle, its name changes to the brachial arterythe three branches of the third part of the axillary artery. These include the: subscapular

artery, anterior circumflex humeral arteryandposterior circumflex humeral artery.
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CIRCUMFLEX SCAPULAR ARTERY


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POSTERIOR CIRCUMFLEX HUMERAL ARTERY

The posterior circumflex humeral artery passes with the axillary nervethrough the quadrangular space to anastomose with the anterior circumflexhumeral artery. Verify the course and relationships of these vessels bypassing a probe through the quadrangular and triangular spaces. Thesearteries supply the surrounding muscles, humerus, and shoulder joint.

SUBSCAPULAR ARTERY


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SUBSCAPULAR ARTERY

The subscapular arteryhas two main branches, the circumflex scapulararteryand thoracodorsal artery. The thoracodorsal artery supplies the

latissimus dorsi muscle. The circumflex scapular artery passes through thetrian ular s ace and artici ates in the collateral circulation of the sca ula
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THORACOACROMIAL ARTERY

second part of the axillary arterythe: thoracoacromial trunkand lateralthoracic trunk. The thoracoacromial artery has four named branches (deltoid,acromial, clavicular, and pectoral) that usually arise from a common trunk. However,some of the branches may also arise directly from the axillary artery. The branchesshould be identified as they are traced toward their destination. The lateral thoracic

arterypasses along the inferior border of the pectoralis minor muscle. It givesbranches to this muscle, the chest wall, and the breast.
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THORACODORSAL ARTERY


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CLAVICLE (LEFT) - ACROMIAL END


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CLAVICLE (LEFT) STERNAL END


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HUMERUS (LEFT)- ANTERIOR VIEW

GREATER TUBERCLE

HUMERUS (LEFT) ANTERIOR VIEW


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HEAD




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INTERTUBERCULAR (OR BICIPITAL GROOVE)




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LESSER TUBERCLE




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SHAFT (OR BODY)



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SCAPULA (LEFT) - ANTERIOR VIEW

ACROMION


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CORACOID PROCESS

SCAPULA (LEFT) - ANTERIOR VIEW

SCAPULA (LEFT) - POSTERIOR VIEW


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ACROMION

SCAPULA (LEFT) POSTERIOR VIEW



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AXILLARY (LATERAL) MARGIN




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CORACOID PROCESSSCAPULA (LEFT) - POSTERIOR VIEW



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GLENOID (FOSSA) CAVITYSCAPULA (LEFT) - POSTERIOR VIEW



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GLENOID (FOSSA) CROSS-SECTION




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INFERIOR ANGLESCAPULA (LEFT) - POSTERIOR VIEW



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INFRAGLENOID TUBERCLE




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INFRASPINATUS FOSSASCAPULA (LEFT) - POSTERIOR VIEW



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SPINE OF SCAPULASCAPULA (LEFT) - POSTERIOR VIEW



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SUPERIOR ANGLESCAPULA (LEFT) - POSTERIOR VIEW



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SUPRAGLENOID TUBERCLESCAPULA (LEFT) - POSTERIOR VIEW



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SUPRASCAPULAR NOTCHSCAPULA (LEFT) - POSTERIOR VIEW



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SUPRASPINATUS FOSSASCAPULA (LEFT) - POSTERIOR VIEW



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VERTEBRAL (MEDIAL) MARGINSCAPULA (LEFT) POSTERIOR VIEW


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BRACHIAL PLEXUS LATERAL CORD


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BRACHIAL PLEXUS - LATERAL CORD


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BRACHIAL PLEXUS MEDIAL CORD

BRACHIAL PLEXUS POSTERIOR CORD


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BRACHIAL PLEXUS POSTERIOR CORD

the posterior cordof the brachial plexusby retracting the axillary artery and lateral and medialcords of the brachial plexus. The posterior cord has two large terminal nerve branches, the axillary

nerve and radial nerve, and three smaller muscular nerve branches, the upper and lowersubscapular nerves and the thoracodorsal nerve.
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LATERAL PECTORAL NERVE


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LATERAL PECTORAL NERVE

The lateral and medial pectoral nerves are named for the cord of the brachial plexus

from which they arise and not their relationship to the pectoralis minor muscle. Thelateral ectoral nerve is located su erior and medial to the ectoralis minor muscle,

LONG THORACIC NERVE


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LONG THORACIC NERVE

The long thoracic nerve arises from the anterior primary rami of C5, C6, and C7 spinalnerves, and passes through the costocervical canal at the apex of the axilla.

LOWER SUBSCAPULAR NERVE


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LOWER SUBSCAPULAR NERVE

The upper subscapular nervesupplies the subscapularis muscle. The lower subscapular

nerve[medial to scissors] gives branches to the subscapularis muscle and also supplies the teresmajor muscle

MEDIAL CUTANEOUS NERVE OF THE ARM


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CU OUS O

Adjacent and proximal to the ulnar nerve, two nerves arising from the medial cord. These are the medialcutaneous nerve of the arm, which is also called the medial brachial cutaneous nerve, and the medialcutaneous nerve of the forearm, which is also called the medial antebrachial cutaneous nerve. They may arise

separately or from a common trunk. These nerves provide cutaneous innervation to the medial aspect of the armand forearm.

MEDIAL CUTANEOUS NERVE OF THE FOREARM
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MEDIAL CUTANEOUS NERVE OF THE FOREARM

MEDIAL PECTORAL NERVE


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the medial pectoral nerve is located inferior and lateral to the pectoralis minor muscle.

MEDIAN NERVE The median nerve has two roots.
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MEDIAN NERVE

LATERAL ROOT OF THE MEDIAN NERVE


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LATERAL ROOT OF THE MEDIAN NERVE

The lateral root of the median nervearises from the lateral cord of the brachial plexus.

MEDIAL ROOT OF THE MEDIAN NERVE


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OO O

The medial root of the median nervearises from the medial cord of the brachial plexus.

MUSCULOCUTANEOUS NERVE


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MUSCULOCUTANEOUS NERVE

The musculocutaneous nervearises from the lateral cord of the brachial plexus and piercesthe coracobrachialis muscle

RADIAL NERVE
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RADIAL NERVE

The radial nerveis a distal continuation of the posterior cord. It innervates the muscles of theposterior arm and forearm.

THORACODORSAL NERVE


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The thoracodorsal nervesupplies the latissimus dorsi muscle. It is also called the nerve to the latissimus dorsimuscle.

ULNAR NERVE


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ULNAR NERVE

The ulnar nervearises from the medial cord of the brachial plexus

QUADRANGULAR SPACE


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Q

AXILLARY VEIN


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AXILLA


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Documents

Axillary Anatomy