Brain and Spinal Cord Part 3 (Spinal Cord overview and vertebrae) Anatomy

Question 1

Where does the spinal cord receive afferent fibres from

Answer 1

from sensory receptors of the trunk and limbs

Question 2

2. What movement does the spinal cord control

Answer 2

Control movements of the trunk and limbs

Question 3

3. What does the spinal cord provide for most of the viscera

Answer 3

Provide autonomic innervation for most of the viscera

Question 4

1. What is the spinal cord contained in

Answer 4

contained within the vertebral column

Question 5

2. Where does the cervical enlargement start and end

Answer 5

• Starts at C4, ends at T1

Question 6

Where does the lumbosacral enlargement go from

Answer 6

-Starts at L1, ends at S3

Question 7

3. Where does the cervical enlargement innervate and via what plexus

Answer 7

Innervates the upper limbs and neck via the brachial plexus of nerves

Question 8

where does the lumbosacral enlargement innervate and via what plexus

Answer 8

innervates the lower limbs via the lumbo-sacral plexus of nerves

Question 9

6. What vertebral level does the spinal cord terminate and what is this place called

Answer 9

terminates at level L1/2 and this place is called the conus medullaris

Question 10

What the name for the group nerve given off inferiorly to the conus medullaris

Answer 10

Cauda Equina

Question 11

7. What is the strand of connective tissue that comes off the tip of the conus medullaris

Answer 11

filum terminale

Question 12

8. At what vertebral level does the filum terminale attach to the spinal cord

Answer 12

the 1st coccygeal vertebrae

Question 13

10. Why is it important that the spinal cord is tethered down by the filum terminale

Answer 13

So that the spinal cord stays in place as the spinal cord terminates before the spine does

Question 14

What is the spinal cord protected by and where does the spinal cord lie

Answer 14

it is protected by the vertebral column and it lies within the vertebral canal

Question 15

What 3 things form the vertebral canal anteriorly

Answer 15

• Vertebral bodies
• Intervertebral discs (IV disc)
• Ligaments

Question 16

3. What 2 things form the vertebral canal posteriorly

Answer 16

• Vertebral arches
• ligaments

Question 17

1. What are the 3 membranous layers (meninges) of the spinal cord (Hint: Same as the brain)

Answer 17

• The dura mater
• The middle arachnoid mater
• The pia mater

Question 18

2. What does the Pia give off

Answer 18

Pia gives off denticulate ligaments

Question 19

3. What is the space between the dura mater and the vertebral canal called

Answer 19

The epidural (or extradural) space

Question 20

4. What is the space between the arachnoid mater and the pia mater called

Answer 20

subarachnoid space