A,B Flashcards
(36 cards)
What makes up the anterior wall of the axilla?
pec major and minor
What makes up the posterior wall of the axilla?
lat, teres major, subscapularis
What makes up the medial wall of the axilla?
serratus anterior
What makes up the lateral wall of the axilla?
intertubercular sulcus of humerus
What muscles are on the lateral wall of the axilla?
coracobrachialis, long and short head of the biceps
What does the axillary sheath (not the entire axilla) contain?
axillary a. and brachial plexus
What is the fascia of the anterior wall of the axilla (also fascia that surrounds pec minor)?`
clavipectoral fascia
What are the five major groups of lymph nodes in axilla?
pectoral subscapular humeral central apical
What receives lymph from all of the nodes of the axilla?
apical nodes
Where is the axillary sheath located?
medial aspect of arm
What is the branch of the first part of the axillary artery?
superior thoracic a.
What are the branches of the second part of the axillary a.?
thoracoacromial a.
lateral thoracic a.
What are the branches of the third part of the axillary a.?
subscapular a.
anterior circumflex humeral a.
posterior circumflex humeral a.
What are the roots of the brachial plexus?
ventral rami C5 - T1
What nerves emerge above their cervical vertebrae?
C1-C7 emerge above C1-C7 vertebrae
Where does C8 n. emerge?
below C7
What makes up the ‘M’ of the brachial plexus?
musculocutaneous n.
median n.
ulnar n.
What makes up the ‘Y’ of the brachial plexus?
axillary n.
radial n.
What is the major nerve of the anterior arm, what is its origin, and what does it innervate?
musculocutaneous n.
C5-C7, from lateral cord
innervates coracobrachialis, bices, 1/2 of brachialis
What is the major nerve of the anterior FOREarm, what is its origin, and what does it innervate?
median n.
C5-T1, from medial and lateral cords
innervates most of anterior forearm and some of hand
What is the major nerve of the hand, what is its origin, and what does it innervate?
ulnar n.
C8-T1, from medial cord
innervates most of the hand, flexor carpii ulnaris and flexor digitorum (?) in forearm
What is the origin of the axillary n. and what does it innervate?
C5-C6, from posterior cord
innervates deltoid and teres minor
What is the major nerve of the posterior arm and forearm, what is its origin and what does it innervate?
Radial n.
C5-T1, from posterior cord
innervates all mm in posterior arm/forearm and 1/2 of brachialis
Where is the best place to view the radial n.?
inferior border of the triangular interval
