AXILLA
by Yapa Wijeratne
Faculty of MedicineUniversity of Peradeniya Sri Lanka
Apex
3
1. Outer border of 1st rib
2. Clavicle -the posterior surface
3. Upper border of the scapula
Anterior wall
4
1. Pectoralis major
2. Pectoralis minor
3. Subclavius muscles
4. Clavipectoral fascia
Medial wall
1
1. Upper part of serratus anterior
Lower limit of the axilla = level of 4th rib
Lateral wall
1
1. Intertubercular sulcus of the humerus
Posterior wall 3
1. Subscapularis (associated with the costal surface of the scapula);
2. Latissimus dorsi- the distal part
3. Teres major
Floor
Axillary fascia and a dome of skin that spans the distance between the inferior margins of the walls
Clavipectoral fascia Pierced by 4 structures
2 inwards
1. Lymphatics from the infraclavicular nodes to the apical nodes of the axilla.
2. Cephalic vein
2 outwards
1. Lateral pectoral nerve
2. Thoracoacromial artery,
or its branches1. Pectoral
2. Acromial
3. Deltoid
4. Clavicular
Contents
Contents
1. Axillary artery
2. Axillary vein
3. Brachial plexus
4. Lymphatics of the upper limb
5. Proximal parts of two muscles of the arm1. Biceps brachii
2. Coracobrachialis
6. The axillary process of the breast
7. Collections of lymph nodes
Axillary artery
Branches1st part – 1
2nd part – 2
3rd part - 3
SEND THE LORD TO SAY A PRAYER
Branches of the axillary artery
1 Send - Superior thoracic artery
2 The - Thoraco-acromial artery Lord to - Lateral thoracic artery
3 Say - Subscapular artery A - Anterior circumflex humeral artery Prayer - Posterior circumflex humeral artery
Axillary vein
Lymph nodes
1. An anterior or pectoral group
2. A posterior or subscapular group
3. A lateral group
4. A central group
5. An apical group
Gateways in the posterior wall
The inferior margin of the Subscapularis
The surgical neck of the Humerus
The lateral margin of the long head of the Triceps brachii
The superior margin of the Teres major
Quadrangular space
Passing through the quadrangular space are 1. Axillary nerve2. Posterior circumflex humeral artery and vein.
Triangular space the medial margin of the long head of the triceps brachii muscle; the superior margin of the teres major muscle; the inferior margin of the subscapularis muscle
Passing through the triangular space are
1. circumflex scapular artery and vein
Triangular interval
The shaft of the humerus
The inferior margin of the teres major muscle
The lateral margin of the long head of the Triceps brachii
Passing through the Triangular interval are 1. radial nerve
Top Related