Brachial plexus Flashcards
what are the 5 roots of the brachial plexus?
C5 C6 C7 C8 & T1
Name the 3 trunks of the brachial plexus.
superior inferior and middle
name the 3 cords of the brachial plexus and their origin
1)lateral cord formed form the anterior division fo superior and middle trunks
2)posterior cord formed from the posterior division of the superior inferior and middle trunks
3)medial cord formed from the anterior division of the inferior trunk
state the position of the roots and trunks
posterior triangle of the neck
state the position of the branches and cords
Axilla
what are the 2 branches that arise from the roots
1) dorsal scapular nerve
2) long thoracic nerve
what are the 2 branches that arise from the superior/upper trunk
1) suprascapular nerve
2) nerve to subclivius
what are the branches that arise from the medial cord
1) medial cutaneous nerve of the arm
2) medial cutaneous nerve of the forearm
3) medial pectoral nerve
4) medial root of the median nerve
5) ulnar nerve
what are the branches that arise from the lateral cord
1) lateral pectoral nerve
2) lateral root of the median nerve
3) musclocutaneous nerve
what are the nerves that arise from the posterior cord
1) upper scapular nerve
2) lower scapular nerve
3) nerve to latissmus dorsi
4) axillary nerve
5) radial nerve
what does the axillary nerve supply
deltoid and the teres minor
what does the musclocutaneous nerve supply
muscles of the front of the arm
what does the ulnar nerve supply
some muscle on the medial side of the front of forearm and hand
what does the medial nerve supply
some muscles of the front of the forearm and lateral side of the hand (thumb)
what does the radial nerve supply
back of arm and hand
