Upper Limb - 5 (brachial plexus)

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Last updated: August 27, 2018

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First submitted	August 27, 2018
Times taken	24
Average score	68.4%
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Hint	Answer
Which roots are involved in producing the brachial plexus?	C5 to T1
Are they made up of anterior or posterior pirmary rami?	Anterior
Which muscle groups anterior and medius muscle's does the plexus pass between?	Scalenus
What comes next in this sequence, roots, trunks, divisions...	Cords
These are reffered to as the lateral, medial and posterior, but what structure are they being compared to?	Second part of the axillary artery
How many branches are there directly from roots?	3
Which nerve coing solely off C5 supplies levator scapulae and the rhomboids?	Dorsal scapular nerve
Which muscle has a nerve named after it coming off from C5 and C6?	Subclavius
There is only one branch that comes off a trunk (the upper trunk) it supplies supraspinatus and infraspinatus, what is its name?	Suprascapular nerve
Both medial and podterior cords have 5 branches from them, but how many does the lateral cord have?	3

Hint	Answer
Which nerve roots does the ulnar nerve originate from?	C8 and T1
Which cord does it branch off?	Medial
Which roots does the median nerve originate from?	C5 to T1
It comes from the medial cord and which other?	Lateral
What nerve roots does the radial nerve originate from?	C5 toT1
And which cord is it come from?	Posterior
The axillary nerve comes from the same cord but which nerve roots does it have?	C5 and C6
Which cord gives rise to the innervation of all the muscles in the anterior arm?	Lateral
Which cord produces the nerves supplying subscalurais and lat dorsi?	Posterior

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