Nervous System 2

Question 1

Spinal cord extends from where to where?

Answer 1

extends from the foramen magnum to the medullary cone

Question 2

Total pairs of spinal nerves?

Answer 2

31

Question 3

Total number of cervical spinal nerves?

Answer 3

8

Question 4

Total number of thoracic spinal nerves?

Answer 4

12

Question 5

Total number of lumbar spinal nerves?

Answer 5

5

Question 6

Total number of sacral spinal nerves?

Answer 6

5

Question 7

Total number of coccygeal spinal nerves?

Answer 7

1

Question 8

Name all the different types of spinal nerves.

Answer 8

8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal

Question 9

Conus medullaris?

Answer 9

Spinal cord terminates inferiorly as the conus medullaris at approx vertebra L1 and is attached to the coccyx by a continuation of the pia mater known as the terminal filum.

Question 10

Cauda equina

Answer 10

The neural continuation of the spinal cord exists as an extension of spinal nerves from L2 through S5. These parallel nerves resemble a horse’s tail and are called the cauda equina.
REMEMBER L2 THROUGH S5

Question 11

Terminal filum

Answer 11

Spinal cord terminates inferiorly as the conus medullaris at approx vertebra L1 and is attached to the coccyx by a continuation of the pia mater known as the terminal filum.

Question 12

Where is grey matter relative to white matter and visa verse. Describe locations.

Answer 12

Gray matter is deep. Anterior, lateral, posterior horns are gray matter.

White matter is superficial. Anterior, lateral, posterior columns are white matter.