brachial plexus

brachial plexus

network of nerves starting at C5

what are the sections of the brachial plexus

roots of ventral rami

trunks

divisions

cords

branches

what nerve roots are involved in the brachial plexus

C5, C6, C7, C8, T1

what is first branch of the brachial plexus

posterior rami C5-T1

what are the second branches of the brachial plexus

longus coli C4-C7

location of the roots

pass between anterior and middle scalene muscles

what are the projections of the roots

dorsal scapular nerve (C5)

nerve to phrenic nerve (C5 only but links up with 6 and 7 to make phrenic nerve)

long thoracic nerve (C5, C6,C7)

first intercostal nerve (T1)

what are the divisions of the trunk

superior, middle, inferior

where to roots C5 and C6 come together

superior level of the trunk

what are the branches of the superior level of the trunk

nerve to subclavius (C5 and C6)

suprascapular nerve (C5 and C6)

what is the middle level of the trunk

continuation of C7

what comes together at the inferior level of the trunk

C8 and T1

what are the divisions of the division section

3 anterior

3 posterior

what does the anterior division supply

anterior compartment of the upper extremity - the flexors

what does the posterior division supply

posterior division of the upper extremity - the extensors

what are the sections of the cords

lateral, posterior, medial

what are the roots of the lateral cord

C5, C6,C7

what branched from the lateral cord

lateral pectoral nerve (C5, C6,C7)

what branches from the posterior cord level

upper subscapular nerve (C5 and C6)

thoracodorsal nerve (C6, C7,C8)

lower subscapular nerve (C5,C6)

what branches from the medial cord

medial pectoral nerve (C8, T1)

medial brachial cutaneous nerve (T1)'

medial antibrachial cutaneous nerve (C8, T1)

what nerves are in the branches section

musculocutaneous (C5, C6, C7)

axillary (C5,C6)

radial (C5,6,7,8, T1)

median (C5, 6, 7, 8, T1)

ulnar (C7**, C8,T1)