Lumbar Spinal nerves

Question 1

How many lumbar spinal nerve does a person normally have?

Answer 1

10 (5 pairs)

Question 2

T/F: each lumbar spinal nerve is named for the vertebra below the nerve.

Answer 2

False; named for the vertebra above

Question 3

What does each lumbar nerve root divide into?

Answer 3

anterior and posterior primary rami

Question 4

What does each posterior primary rami of the lumbar spinal nerves divide into?

Answer 4

medial and lateral branches

Question 5

Which branches of the posterior primary rami of the lumbar spinal nerves supply the multifidi?

Answer 5

medial branches supply multifidi (M&M)

Question 6

What do the lateral branches of the posterior primary rami of the lumbar spinal nerves supply?

Answer 6

erector spinae group

Question 7

T/F: the anterior primary rami of the lumbar spinal nerves contribute to both the lumbar and the sacral plexuses.

Answer 7

True (L4 contributes to both plexuses)

Question 8

Typically, how many lumbar sympathetic ganglia exist?

Answer 8

4

Question 9

Which lumbar spinal nerves will have white rami communicans associated with them?

Answer 9

L1, L2 and sometimes L3

Question 10

Which lumbar spinal nerves will have gray rami communicans associated with them?

Answer 10

all of them