Brachial Plexus

Question 1

which part of brachial plexus is supraclavicular?

Answer 1

roots and trunks

Question 2

which part of brachial plexus is at the clavicle?

Answer 2

divisions

Question 3

which part of brachial plexus is infraclavicular?

Answer 3

cords and branches

Question 4

true or false

Because the brachial plexus is made up of ventral rami of nerves, it is only motor.

Answer 4

False

plexus roots have all modalities and innervation

Question 5

what nerve comes off of C5 root of ventral rami?

Answer 5

dorsal scapular nerve

Question 6

what spinal nerve roots compose the long thoracic nerve?

Answer 6

C5, C6, C7

Question 7

Where does the Nerve to subclavius and supra scapular nerves come into contact with brachial plexus?

Answer 7

upper trunk

Question 8

where does supra scapular nerve join the brachial plexus?

Answer 8

upper trunk

Question 9

where does nerve to subclavius join brachial plexus?

Answer 9

upper trunk

Question 10

what cords are the anterior compartment?

Answer 10

lateral and medial cord

Question 11

what nerves branch from medial cord

Answer 11

medial pectoral nerve
medial brachial cutaneous nerve
medial ante brachial nerve

Question 12

what nerves branch from posterior cord

Answer 12

upper sub scapular nerve
lower sub scapular nerve
thoracodorsal nerve

Question 13

which nerve of the major terminal branches compose the anterior compartment

Answer 13

musculocutaneous
median
ulnar

Question 14

which nerve of the major terminal branches compose the posterior compartment

Answer 14

radial

axillary

Question 15

what nerve is in the anterior compartment of the arm? what is its function?

Answer 15

Musculocutaneous nerve

flexors of elbow joint

Question 16

what nerve is in the posterior compartment of the arm? what is its function?

Answer 16

radial nerve

extensors of elbow joint

Question 17

what nerve is in the anterior compartment of the forearm and hand?

Answer 17

ulnar and median nerves

Question 18

what nerve is in the posterior compartment of the arm?

Answer 18

radial nerve

Question 19

presentation of this disorder causes upper limb adduction, medially rotated and elbow is extended and wrist is flexed

Answer 19

erb’s palsy

Question 20

sensory and motor defects of erbs palsy

Answer 20

sensory: lateral aspect of upper limb
motor: loss of arm abduction, loss of elbow flexion, loss of forearm supination, weakness of wrist extension

Question 21

where do injuries causing Erb’s palsy occur? what causes them?

Answer 21

superior trunk (C5 and C6 spinal nerve roots) 
excessive, forceful increase in angle between neck and shoulder