brachial plexus

Question 1

how many spinal nerves do we have

Answer 1

31

Question 2

mention the spinal nerves

Answer 2

8 cervical
12 thoracic
5 lumbar
5 sacrel
1 coccygeal nerves (tail bone)

Question 3

describe teh spinal nerves

Answer 3

anterio root gives motor fibers
posterior root gives sensory fibers
the spinal nerve divides into anterior ramus and posterior ramus which are both mixed nerves

Question 4

describe the brachial plexus

Answer 4

it is formed by the anterior rami of C5 TO c8 AND the anterior ramus of T1
it passes laterally and inferiorly over the first rib into the axilla