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Axillary Artery
Vertebral Arteries
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Right Subclavian Artery
- Arises from brachiocephalic artery
- behind right sternoclavicular joint
- passes upward and laterally behind scalenus anterior
- becomes continuous with axillary artery at outer border of first rib
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Left Subclavian Artery
- arises from arch of aorta
- behind left common carotid artery
- runs upward along left side of trachea and oesophagus
- ascends to root of neck
- arches laterally behind scalenus anterior
- becomes continuous with axillary artery
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- Divided into 3 part
- from origin to medial border scalenus anterior
- behind scalenus anterior
- lateral border of scalenus anterior to outer border 1st rib
Branches
- First Part
- Second Part
- Third Part
Reltations
- First part
- anteriorly
- common carotid antery
- ansa subclavia
- vagus nerve
- internal jugular vein
- vertebral vein
- phrenic nerve (left side)
- cardiac branches of vagus and sympathetic nerves
- Posteriorly
- dome of the pleura
- apex of lung
- ansa subclavia
- right recurrent laryngeal nerve
- Second Part
- anteriorly
- posteriorly
- dome of the pleura
- apex of lung
- Third part
- anteriorly
- skin
- superficial fascia
- platysma
- supraclavicular nerves
- investing layer of deep cervical fascia
- external jugular vein (+ tributaries)
- suprascapular artery
- clavicle
- nerve to subclavius
- subclavian vein lies below and in front of artery
- posteriorly
- lower trunk of the brachial plexus
- scalenus medius
- Superiorly
- upper and middle trunks of brachial plexus
- Inferiorly
- upper surface of first rib
[ Axillary Artery ] [ Vertebral Arteries ]
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