Flashcards in Block 2 - Arm Vasculature Deck (16):
The axillary artery is divided by what superficial muscle? How?
The pectoralis minor
1st part - from lateral edge of 1st rib to medial edge of pectoralis minor
2nd part - deep to pectoralis minor
3rd part - from lateral border of pectoralis minor to where artery crosses teres major tendon
Which two arteries branch off of the 2nd part of the axillary artery? Which one is more proximal?
Thoracoacromial is more proximal.
Lateral thoracic is more distal.
Which 4 arteries branch off the thoracoacromial artery?
Clavicular Branch of the thoracoacromial artery
Pectoral Branch of the thoracoacromial artery
Deltoid Branch of the thoracoacromial artery
Acromial Branch of the thoracoacromial artery
Which 3 arteries branch off the 3rd part of the axillary artery?
Anterior circumflex humeral artery
Posterior circumflex humeral artery
Where is the pectoral branch of the thoracoacromial artery found?
Descends between pectoralis major and minor, often adhered to deep surface of pectoralis major, paralleling lateral pectoral nerve
What vein does the deltoid branch of the thoracoacromial artery cross?
How does the acromial branch of the thoracoacromial artery leave the thoracoacromial artery?
Passes superior to the coracoid process toward the acromion
How does the clavicular branch of the thoracoacromial artery leave the thoracoacromial artery?
Courses superomedial to the subclavius and sternoclavicular joint
Which 3 veins will need to be retained after a part of the clavicle is removed and the axillary sheath is opened?
Cephalic, axillary, and brachial veins
What is the axillary artery called after it continues distal from teres major
What is the sole branch of 1st part of the axillary artery? Where does it distribute to?
Superior thoracic artery
1st and 2nd intercostal spaces
How does the lateral thoracic artery descend from the 2nd part of the thoracoacromial artery?
Along lateral margin of pectoralis minor toward serratus anterior muscle
Which is the largest branch of the 3rd part of the axillary artery? How does is project off axillary??
What two branches come off the subscapular artery? H
Circumflex scapular artery and thoracodorsal artery
Which of the two circumflex humeral arteries is larger?