Download Subclavian-axillary artery

Subclavian artery
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Divided by Scalenius Anterior
Ends at 1st rib
On right – branch of brachicephalic trunk, On left, aorta
1st part
1. vertebral artery
2. thyrocervical trunk
i. inferior thyroid artery
ii. suprascapular artery
iii. transverse cervical
iv. ascending cervical – runs medial to phrenic nerve up on the
prevertebral fascia
3. internal mammary artery
i. usually passed over by the phrenic nerve (sometimes under)
nd
 2 part
1. costocervical artery
i. superior intercostal artery
ii. deep cervical artery – anastamoses with occipital artery
rd
 3 part
1. dorsal scapular artery
Axillary artery
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Divided by pectoralis minor
Starts at 1st rib, ends at teres major lower border
2nd part is clasped by 3 cords of brachial plexus
1st part
1. superior thoracic artery
nd
 2 part
1. thoracoacromial artery
2. lateral thoracic artery
 3rd part
1. subscapular artery
2. anterior circumflex humeral artery
3. posterior circumflex humeral artery
i. passes thru quadrangular space with axillary nerve