Neuro Anatomy of the Spinal Chord Flashcards Preview

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Flashcards in Neuro Anatomy of the Spinal Chord Deck (31):
1

How many cord segments are there?

31

2

The cord tapers to a cone called what?

Cons Medullaris

3

Cord segments are house by what?

T9-L1

4

Where are the spinal cord enlargements located?

C5-T1 and L1-S3/S4

5

What causes the cervical enlargement of C5-T1

Information from the Brachial plexus runs through here

6

What is the main difference between the cranial meanings and spinal meninges

There is and epidural space in the spinal meanings

7

The dura mater is innervated by what nerve

Recurrent meningeal nerve

8

The thecal sac extends to what vertebral body

S2

9

What are the two derivatives of the pia mater

Denticulate ligaments
Fillum terminale

10

T/F Synapse happen in the white matter and not in the gray matter

False- only axons are found in the gray matter and synapse happen in the gray matter

11

Lateral horns can only be in what cord sections

T1-L2/L3

12

The Central canal a remnant of what embryological structure?

Neural Tube

13

The central Canal is a continuation of what structure?

4th ventricle

14

What the four type of neurons found in the gray matter of the spinal cord?

Motor
Interneuron
Tract
Propriospinal

15

What type of neuron has axons that leave the spinal cord?

Motor

16

Alpha neurons innervate what kind of tissue?

Extra fusal muscle fibers outside of the neuron muscular spindle

17

What kind of neuron stays within the cord segments and have short axons?

Interneuron

18

What kind of neuron has axons that go into the white matter before projecting upward to the brain?

Tract

19

What kind of Neuron is in all cord segments but does project to the brain?

Propriospinal

20

What kind of neuron interconnects cord segments to effect posture?

Propriospinal

21

T/F The ten layers refers to the white matter of the spinal cord?

False- there 10 layers refers to the gray matter

22

Pseudounipolar neurons synapse at what layers/

I-VI

23

Layer I and II are collectively called what?

substantia gelatinosa

24

What kind of information enters the substantia gelatinosa?

Pain and temperature

25

The substantia gelatinosa gets information what kind of receptors?

Nociceptors and thermoreceptors

26

Layer III and IV are collectively call what?

Nucleus proprius

27

What kind of information goes into the Nucleus Proprius?

Everything but pain and temperature

28

What kind of information enters layer VI?

Propricoeptive

29

What forms the complex circuitry in the lamina?

Interneurons

30

Where is the site of convergence of trigeminal and cord afferents?

C1- C3 in the dorsal horn

31

Pain can be referred from the neck to where?

The trigeminal terriitory