Breast and axilla Flashcards
What is the name given to the connective tissue that divides the secretory lobules of the breast?
Ligament of cooper
Where does the suspensory ligament/ligament of Cooper insert and attach?
Secretory lobules - pectoralis major fascia
What is the arterial supply to the medial 2 breast quadrants?
Internal thoracic
What is the arterial supply to the lateral breast quadrants?
Thoracoacromial
Mammory
Lateral mammory
75% of lymph drains into what group of nodes?
Axillary
Where do axillary nodes drain from?
Lateral quadrants
What are the other nodes involved in breast lymphatic drainage?
Parasternal 20%
Posterior intercostal 5%
What is the venous drainage of the breast?
Axillary vein
Internal thoracic vein
What is the innervation of the breast?
4th to 6th intercoastal nerves
What are the five pairs of lymph trunks?
Jugular Subclavian Bronchomediastinal Intestinal*** unpaired Lumbar
What lymph trunk drains the right upper limb and right side of chest?
Right lymphatic duct
What lymph trunk drains the left side of the body?
Thoracic
Where do the right lymphatic and thoracic ducts drain into?
Subclavian veins
What are the contents of the axilla?
Axillary artery Axillary vein Biceps brachii Coracobrachialis Brachial plexus Axillary lymph nodes
What are the 7 branches of the axillary artery?
Superior thoracic Thoracoacromial Lateral thoracic Subscapularis Anterior circumflex Posterior circumflex
What muscle sits superiorly to the axillary artery and is used as a reference point for the arteries differing regions?
Pectoralis minor
When does the subclavian artery become the axillary artery?
Lateral border of first rib
When does the axillary artery become the brachial artery?
When it crosses teres major
What are the 5 lymph nodes in the axillary region?
Pectoral Central Apical Humeral Subscapular
What are the 5 roots of the brachial plexus?
C5 C6 C7 C8 T1
What are the 3 trunks of the brachial plexus?
Superior
Middle
Inferior
What are the 3 cords of the brachial plexus?
Lateral
Posterior
Medial
What are the 5 branches of the brachial plexus?
Musculocutaneous Axillary Median Radial Ulnar
The subclavian artery arises from a gap between what two muscles?
Scalenus medius
Scalenus anterior
