Axillary Artery Flashcards
How many parts are there to the axillary artery?
3 parts, changes as it descends proximally down the arm
What are the borders of the 1st part?
Lateral border of 1st rib as a continuation of subclavian artery
Ends at lower border of teres major muscle by becoming the brachial artery
How many arteries do each branch contain?
1st -1
2nd- 2
3rd- 3
What is the artery of the 1st branch?
Superior THoracic artery
Sup Thoracic Art: Supplementation
1st 2 intercostal spaces superficially
What are the names of the arteries of the 2nd trunk?
Thoracoacromial Trunk
Lateral Thoracic ARtery
THoracoacromial Trunk: Characteristics
Arises behind the upper margin of the pec minor and quickly divides into 4 branches
What are the names of the offspring vessels of the THoracoacromial Trunk? Their supplementations?
APCD:
Acromial ARtery- Supplies region of acromion process
Pectoral ARteries- Pierce costocoracoid membrane, supply pecs
Clavicular ARtery- Small branch, goes to subclavius muscle
Deltoid ARtery- Enters deltopec triangle and travels distally with cephalic vein
Lateral Thoracic Art: Rising point and supplementation
Arises behind lower border of pec minor
Supplies lower ant and medial aspects of axilla and mammary gland
What are the names of the arteries of the 3rd branch?
Scapular Circumflex
Anterior Humeral Circumflex
Posterior Humeral Circumflex
Scapular Circumflex: Pathway
Goes around scapula, between the scapula and teres muscles and gives off branches. Branches pass through the triangular space. Ends deep to infraspinatus muscle
Scapular Circumflex: Arterial Junction
Joins with suprascapular artery which forms a collateral route for blood from the 1st part of the subclavian artery to the 3rd part of the axillary artery
What does the subscapular artery branch to?
Scapular Circumflex
Thoracodorsal
Thoracodorsal: Pathway
Travels with thoracodorsal nerve to the latissimus dorsi muscle
Anterior Humeral Circumflex Artery: Pathway
Passes anterior to humerus (Small)
