Dissection 2 Flashcards
Forms the anterior wall of the axilla and its lower border is contained in the inferior edge of the anterior axillary fold
Pectoralis mjor
Main muscles of climbing
Pectoralis major and latissimus dorsi
Important accessory muscle of inspiration
Pec major
Main muscle of posterior wall of axilla and its lateral border is contained in the inferior edge of the posterior axillary fold
Latissimus dorsi (teres major also contributes to the posterior wall of the axilla; its inferior border corresponds to the inferior extent of the axilla)
How does the subclavian vein reach the root of the neck from the axilla?
Over the first rib and under the clavicle
Where does the subclavian drain into the internal jugular vein?
Posterior to the sternoclavicular joint
When does the subclavian vein become the axillary vein?
At the lateral border of the first rib
When is the axillary vein renamed the brachial vein?
At the lower border of teres major
Where can you palpate pulsations of the subclavian artery?
Where the artery crosses the first rib
remember the subclavian artery becomes the axillary artery at the lateral border of the first rib
How can you locate the medial, lateral and posterior cords of the brachial plexus?
They are around the axillary artery!
Superior trunk
Combined anterior rami of C5 and C6
Middle trunk
Anterior ramus of C7
Inferior trunk
Combined anterior rami of C8 and T1
Ulnar nerve comes from which cord
Medial cord
Musculocutaneous nerve comes from which cord?
Lateral cord