1 General Terminology and SC Mophology - B Flashcards Preview

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Flashcards in 1 General Terminology and SC Mophology - B Deck (101)
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1

What are local interneurons

Neurons that have processes confined to a single small area of the CNS

2

What are projection neurons

Cells with long axons connecting different areas

3

Gray matter

Contains cell bodies and dendrites

4

Nuclei are

Collections of cell bodies with a common function located within the CNS

5

White matter is

An area where there is a collection of axons; many covered in myelin

6

Fasiculus, funiculus, lemniscus, and tract are all terms for

White matter

7

What is the cortex

Layers of gray matter over other parts of CNS

8

2 part naming system of tracts is

1st part - location of neuronal cell bodies from which axons originate 2nd part - where axons terminate

9

The cervical enlargement is responsible for

Upper extremity

10

The lumbosacral enlargement is responsible for

Lower extremity

11

The pairs of spinal nerves are

C1-8 T1-12 L1-5 S1-5 Co1

12

The conus medullaris is

Tapering inferior end of spinal cord

13

Inferior to the conus medullaris is

Cauda equina

14

The filum terminale

Thin strand of pia mater that helps anchor the conus medullaris to the coccyx

15

Where do the posterior rootlets enter the cord

Posterolateral sulcus

16

Where do the anterior rootlets leave

Poorly defined anterolateral sulcus

17

What is the substantia gelatinosa

Distinctive region of grey matter that caps the posterior horn

 

SG

18

What is the body of posterior horn

Consists of interneurons and projection neurons that transmit somatic and visceral information

19

Substantia gelatinosa carries primarily

Pain and temperature information

20

What is Lissauer’s tract

White matter located between substantia gelatinosa and the surface of the cord

21

The anterior horn contains

Cell bodies of large motor neurons that supply skeletal muscle

22

Motor neurons that supply mm are called

Lower motor neurons

23

The intermediate gray matter contains

Autonomic fibers (preganglionic fibers)

24

Clarks nucleus is also known as

Posterior thoracic nucleus

25

Where is Clark’s nucleus

Medial surface of the base of posterior horn (T1 to L2)

26

Intermediolateral cell column contains what

Preganglionic sympathetic neurons

27

The sacral parasympathetic nucleus is at what level

S2-4

28

Clark’s nucleus plays a large role in

Sensory processing Typically treated as though it is posterior horn

29

What are the laminae of the gray matter

Lamina 1-10

30

Lamina 1 is

Thin layer of gray matter covering the substantia gelatinosa