Axillary artery

Question 1

Axillary artery origin/termination

Answer 1

begins at lateral border of 1st rib
ends at inferior border of teres major
–>becomes brachial artery

Question 2

Branches of axillary artery

Answer 2

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(1) Superior thoracic artery
(2) Thoracoacromial artery (medial to pec minor)–>branches
(2) Lateral thoracic artery (lateral to pec minor)
(3) Subscapular artery–>branches
(3) Anterior circumflex humeral artery
(3) Posterior circumflex humeral artery

Question 3

Sub-branches of thoracoacromial artery

Answer 3

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Clavicular
Acromial
Deltoid
Pectoral

Question 4

Sub-branches of subscapular artery

Answer 4

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ends in STDs
Scapular circumflex / Circumflex scapular
ThoracoDorsal

Question 5

Axillary sheath

Answer 5

encloses first part of axillary artery

includes superior thoracic artery

Question 6

Supplied by superior thoracic artery

Answer 6

1st and 2nd intercostal spaces and superior part of serratus anterior

Question 7

First part of axillary artery

Answer 7

located from lateral border of 1st rib to medial border of pectoralis minor; enclosed in axillary sheath
includes 1 branch: superior thoracic artery

Question 8

Second part of axillary artery

Answer 8

located posterior to pectoralis minor

includes 2 branches: thoracoacromial artery and lateral thoracic artery

Question 9

Third part of axillary artery

Answer 9

extends from lateral border of pectoralis minor to inferior border of teres major
includes 3 branches: subscapular artery, anterior circumflex humeral artery, and posterior circumflex humeral artery

Question 10

Supplied by lateral thoracic artery

Answer 10

serratus anterior, pectorals, axillary lymph nodes, lateral thoracic wall, and lateral aspect of breast

Question 11

Circumflex scapular artery

Answer 11

sub-branch of subscapular artery
seen in triangular space
supplies posterior scapular muscles
participates in anastomoses of scapula

Question 12

Thoracodorsal artery

Answer 12

sub-branch of subscapular artery
supplies latissimus dorsi
participates in anastomoses of scapula

Question 13

Supplied by anterior circumflex humeral artery

Answer 13

coracobrachialis and biceps brachii

Question 14

Supplied by posterior circumflex humeral artery

Answer 14

(seen in quadrangular space!)

glenohumeral joint, deltoid, teres major, teres minor, and long head of triceps