Axilla and Arm Flashcards
forms the anterior axillary fold (1)
Pectoralis major
form the posterior axillary fold (2)
Latissimus dorsi and teres
o Thick layer of fascia enclosing: axillary artery, axillary vein, & distal portion of brachial plexus
♣ Axillary sheath
Continuation of the subclavian artery
Axillary artery
Axillary artery Becomes the (what) at inferior border of teres major
brachial artery
axillary artery Subdivided based on relationship to what muscle :
pectoralis minor
what is the 1 branch off the first part of the axillary artery
◊ Superior thoracic artery
♦ supplies 1st-2nd intercostal spaces
what are the (2) branches off the first part of the axillary artery
- Thoracoacromial artery
1a. supplies pectoral muscles and deltoid - Lateral thoracic artery
2a. supplies serratus anterior and pectoral muscles
2b. courses with the long thoracic nerve
what are the (3) branches off the first part of the axillary artery
◊ Subscapular artery
◊ Anterior circumflex humeral artery
◊ Posterior circumflex humeral artery
what are the 2 branches off subscaular artery and what areas do they supply
♦ Circumflex scapular artery
supplies scapular region
♦ Thoracodorsal artery
supplies latissimus dorsi
what region does the anterior circumflex supply
♦ supplies shoulder and arm
what region does the posterior circumflex supply
♦ supplies shoulder and arm
♦ anastomoses with anterior circumflex humeral artery
what travels though the quadrangular space
- Posterior circumflex artery
2. Axillary nerve
What are the (4) borders of the quadrangular space:
- teres minor (superior),
- teres major (inferior),
- humerus (lateral),
- long head of triceps brachii (medial)
o Formed by union of brachial veins & basilic vein at inferior border of what muscle
teres major