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Brachial Plexus

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calritchie
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Last updated: October 21, 2024
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First submittedOctober 21, 2024
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Question
Answer
The cords (lateral, medial, posterior) and termed in relation to what?
axillary artery
What 5 nerve roots make the brachial plexus?
C5-T1
What is the correct order of 'cords, roots, divisions, terminal branches, trunks'? (..., ..., etc)
roots, trunks, divisions, cords, terminal branches
What spinal cord segments supply the ulnar nerve?
C8-T1
There teres major is supplied by which nerve, and what cord does this nerve orgininate? (..., ...)
lower subscapular, posterior
Are there any branches that come from divisions?
no
What roots form the superior trunk?
C5-C6
What roots form the middle trunk?
C7
The posterior divisions of the 3 trunks form what cord?
posterior
What cord gives rise to the thoracodorsal nerve?
posterior
What spinal cord segments supply the axillary nerve?
C5-C6
How many terminal branches are there of the brachial plexus?
five
What spinal cord segments supply the radial nerve?
C5-T1
The lateral cord gives off 1 branch (nerve). What is it?
lateral pectoral
What divides into anterior and posterior divisions?
trunks
The subscapularis is supplied by which nerve?
upper and lower subscapular
What nerve branches off C5 root?
dorsal scapular
The upper and lower subscapular nerves branch off which cord?
posterior
What muscle does the long thoracic nerve supply?
serratus anterior
The anterior divisions of the superior and middle trunks form what cord?
lateral
What spinal cord segments supply the musculocutaneous nerve?
C5-C7
What roots form the inferior trunk?
C8-T1
Does the medial pec nerve supply both (b) pec muscles, just major (M), or just minor (m)?
b
What muscles does the axillary nerve supply in the shoulder region? (..., ...)
deltoid, teres minor
Medial cord gives off what cutaneous nerve of the arm?
medial cutaneous nerve of the arm
What does a root contain in relation to the brachial plexus?
ventral rami of a spinal nerve
What nerve branches from the superior trunk?
suprascapular
The ulnar nerve and one other nerve come from medial cord. What is that?
median
How many terminal branches does each cord have?
two
What innervates the rhomboids and levatore scapulae?
dorsal scapular
The anterior division of the inferior trunk form what cord?
medial
What spinal cord segments supply the median nerve?
C6-T1
The long thoracic nerve branches off which roots?
C5-C7
The posterior cord terminates into two nerves. What are they? (..., ...)
axillary, radial
The musculocutaneous and median nerve are terminal branches of what cord?
lateral
What muscles does the suprascapular nerve supply? (..., ...)
supraspinatus, infraspinatus
What muscle does the thoracodorsal nerve supply?
latissimus dorsi
The medial pectoral nerve is a branch of what cord?
medial
What terminal branch is the only one to receive contribution from two cords?
median
Medial cutaneous nerve of the forearm branches off what cord?
medial
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