Axilla and Arm Flashcards
(38 cards)
forms the anterior axillary fold (1)
Pectoralis major
form the posterior axillary fold (2)
Latissimus dorsi and teres
o Thick layer of fascia enclosing: axillary artery, axillary vein, & distal portion of brachial plexus
♣ Axillary sheath
Continuation of the subclavian artery
Axillary artery
Axillary artery Becomes the (what) at inferior border of teres major
brachial artery
axillary artery Subdivided based on relationship to what muscle :
pectoralis minor
what is the 1 branch off the first part of the axillary artery
◊ Superior thoracic artery
♦ supplies 1st-2nd intercostal spaces
what are the (2) branches off the first part of the axillary artery
- Thoracoacromial artery
1a. supplies pectoral muscles and deltoid - Lateral thoracic artery
2a. supplies serratus anterior and pectoral muscles
2b. courses with the long thoracic nerve
what are the (3) branches off the first part of the axillary artery
◊ Subscapular artery
◊ Anterior circumflex humeral artery
◊ Posterior circumflex humeral artery
what are the 2 branches off subscaular artery and what areas do they supply
♦ Circumflex scapular artery
supplies scapular region
♦ Thoracodorsal artery
supplies latissimus dorsi
what region does the anterior circumflex supply
♦ supplies shoulder and arm
what region does the posterior circumflex supply
♦ supplies shoulder and arm
♦ anastomoses with anterior circumflex humeral artery
what travels though the quadrangular space
- Posterior circumflex artery
2. Axillary nerve
What are the (4) borders of the quadrangular space:
- teres minor (superior),
- teres major (inferior),
- humerus (lateral),
- long head of triceps brachii (medial)
o Formed by union of brachial veins & basilic vein at inferior border of what muscle
teres major
axillary vein Becomes subclavian vein at
level of 1st rib
Brachial veins superficial or deep
deep
BR cords Named according to their position relative to
axillary artery
◊ medial to the medial border of the scapula
what nerve
dorsal scapular
what nerve Travels with lateral thoracic artery
long thoracic nerve
♦ which nerve innervates the skin of lateral forearm
◊ Musculocutaneous nerve
♦ what syndrome involves compression of the median nerve as it passes deep to the flexor retinaculum at the wrist
Carpal tunnel
Carpal tunnel syndrome involved what nerve
median nerve
axillary nerve levels
C5-C6