The axilla Flashcards
Why is the Axilla clinically important?
It contains the long thoracic nerve which can be damaged during a lymph node biopsy.
How can long thoracic nerve damage manifest itself?
A winged scapula.
What is thoracic outlet syndrome?
Pain in the limb due to compression on the nerves.
What forms the apex of the axilla?
The clavicle
What forms the lateral wall of the axilla?
The humerus
What forms the medial wall of the axilla?
The thoracic wall
What forms the anterior wall of the axilla?
Pectoralis major
What forms the posterior wall of the axilla?
The subscapularis, latissumus dorsi and teres major.
What is the contents of the axilla?
The axillary artery and vein
Lymph nodes
Biceps brachii and Coracobrachialis tendons
Brachial plexus
What nerve roots form the brachial plexus?
C5, C6, C7, C8, T1
Which nerve roots form the superior trunk?
C5 and C6
Which nerve roots form the middle trunk?
C7
Which nerve roots form the inferior trunk?
C8 and T1
Which nerves come from the Brachial Plexus?
Musculocutaneous Axillary Median Radial Ulnar
What are the 5 sections of the Brachial Plexus?
Roots Trunks Divisions Cords Branches
