brachial plexus

Question 1

what do the roots pass between into the posterior triangle

Answer 1

anterior and middle scalene muscles

Question 2

where are the roots in relation to the subclavian artery

Answer 2

posterior and superior

Question 3

what forms the superior trunk

Answer 3

roots of c5 and c6

Question 4

what forms the middle trunk

Answer 4

root of c7

Question 5

what form the inferior trunk

Answer 5

roots of c8 -t1

Question 6

what do the trunks pass over into the axialla

Answer 6

rib 1

Question 7

cords are named for their relationship to

Answer 7

axillary artery

Question 8

lateral cord is formed by

Answer 8

anterior divisions of superior and middle trunk

Question 9

lateral cord contains fibers from

Answer 9

C5,C6,C7

Question 10

medial cord is formed by

Answer 10

anterior division of inferior trunk

Question 11

medial cord contains fibers from

Answer 11

c8 and T1

Question 12

posterior cord is formed by union of

Answer 12

posterior division of all 3 trunks

Question 13

posterior cord contains fibers from

Answer 13

C5, C6,C7, C8, T1

Question 14

What nerves are formed from the roots of the brachial plexus

Answer 14

dorsal scapular, long thoracic

Question 15

dorsal scapular nerve supplies

Answer 15

levator scapula, rhomboid major, rhomboid minor

Question 16

Long thoracic nerve supples

Answer 16

serratus anterior

Question 17

long thoracic nerve contains fibers from

Answer 17

C5, C6, C7