Peripheral nerves Flashcards
What nerves form the cervical plexus?
C1-C4
How many roots are in the brachial plexus?
5
How many trunks are in the brachial plexus?
3 (Superior C5 & 6, Middle C7, Inferior C8-T1)
How many divisions are in the brachial plexus?
6
How many cords are in the brachial plexus?
3
How many branches are in the brachial plexus?
4
Where are the brachial plexus roots, trunks, and divisions found?
posterior triangle of neck
supraclavicular
Where are the cords and branches of the brachial plexus found?
Axilla
Infraclavicular
What nerve roots are typically involved in the brachial plexus?
C5-T1
Where do you place an interscalene block and what are you looking for on ultrasound?
Place in the interscalene space between the anterior and middle scalene …….Looking for the 3 nerve bundle like a stop light
Where are the divisions of the brachial plexus typically found?
Posterior to the clavicle
How many Ventral (anterior) divisions are there? What do they supply?
3 anterior - supply flexor portions
How many Dorsal (posterior) divisions are there in the brachial plexus? What do they supply?
3 posterior - supply extensor portions
The dorsal and ventral divisions come together to form the cords of the brachial plexus. How many cords are there? How are they named?
3 cords - named by there position to the axillary artery (Posterior, Lateral, and Medial)
Where do the cords of the brachial plexus divide into branches?
at the pectoralis minor
