Anatomy- Axilla and Brachial Plexus Flashcards
where does the brachial plexus originate from
anterior rami of C5-T1
what do the chords of the brachial plexus travel around
the brachial artery
how do you remember the order of component of the brachial plexus
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roots, trunks, divisions, cords, nerves
what happens to the C5 and C6 roots in the brachial plexus
combine into superior trunk
split into anterior and posterior divisions
what happens to the anterior division of the superior and middle trunks
join to form lateral chords
what combines to give the posterior cord
posterior divisions of the superior, middle and inferior trunks
what happens to the C7 root
becomes middle tunk, splits into anterior and posterior divisions
what happens to the C8 and T1 roots
combine into inferior trunk and then split into posterior and anterior divisions
what happens to the anterior division of the inferior trunk
becomes the medial cord
what does the musculo-cutaneous nerve come from
lateral chord
what does the axillary and radial nerves come from
posterior cord
what does the median nerve come from
lateral and medial cords
what does the ulnar nerve come from
medial cord
do anterior or posterior rami form the brachial plexus
anterior
what does the lateral pectoral nerve come from
lateral chord
what does the suprascapular nerve come from
superior trunk
where does the nerve to the scapularis come from
superior trunk
where does the dorsal scapular nerve come from
C5 root
where does the long thoracic nerve come from
C5,6,7 roots
where does the upper and lower subscapular nerves come from
posterior chord
where does the medial pectoral nerve come from
medial cord
where does the medial cutaneous nerve of the arm come from
medial cord
where does the medial cutaneous nerve of the forearm come from
medial cord
where does the thoracodorsal nerve come from
posterior cord
what is the route of the subclavian vein as it passes through the axialla
inferior to the clavicle, superior to the first rib, drains into the internal jugular vein posterior to the sternoclavicular joint
where does the axillary vein become the subclavian vein
at the first rib
where does the cephalic vein drain into
either the subclavian or axillary veins
where is the subclavian artery in relation to the subclavian vein
immediately inferior
where are the axillary lymph nodes
within the fascia of the axilla
apical, central and basal
where do the apical nodes drain to
drain to the right lymphatic duct/ thoracic duct
where do the central lymph nodes drain to
apical nodes
where do the basal nodes drain to
the central nodes
what are the subgroups of the basal lymph nodes
pectoral (along the lateral border of the pectoralis minor)
subscapular
humeral
where do the pectoral nodes receive lymph from
the breast
where do the subscapular lymph nodes receive lymph from
scapular region
where do humeral lymph nodes get lymph from
receive most of the upper limb lymph
