Spinal Cord Anatomy Flashcards Preview

Pathology > Spinal Cord Anatomy > Flashcards

Flashcards in Spinal Cord Anatomy Deck (22):
1

What is the white matter separated to in the spinal cord?

Dorsal/Lateral/Ventral Funiculus

2

What is gray matter?

Cell bodies

3

What is white matter?

Fibers - axons

4

Where is the alar plate located?

Dorsal Funiculus

5

Where is the basal plate located?

Ventral Funiculus

6

Dorsal Horn - Substantia Gelatinosa

Small compact cells that modulate pain sensory input

7

Dorsal Horn - Nucleus Proprius

Cells of origin of the spinothalamic tract that receives many sensory inputs

8

Intermediate Gray Area - Nucleus Dorsalis

AKA "Clark's Nucleus" and is used for the dorsal spinocerebellar tract

9

Lateral Horn - Intermediolateral Nucleus

Origin of the preganglionic sympathetic cholinergics and is found from T1 to L3

10

Intermediate Gray Area - Intermediomedial Nucleus

Receives visceral afferents - not as important as IML

11

Ventral Horn - Medial and Lateral Motor Nuclei

Axial muscles are medial and muscles such as those in your hand are controlled by the lateral nuclei

12

What are the non-encapsulated receptors?

- Free Nerve Endings
- Merkel's Disk
- Hair Follicle

13

What are the fast adapting receptors?

- Hair Follicle
- Meissner's Corpuscle
- Pacinian Corpuscle

14

Meissner's Corpuscle Function

2 point discrimination

15

Pacinian Corpuscle Function

Vibration

16

What information does the dorsal column pathway relay?

GSA
- 2 point discrimination
- Vibration sense
- Proprioception (positional)

17

What are the receptors of the DCP?

- Meissner's Corpuscle
- Pacinian Corpuscle
- Neuromuscular Spindle
- Golgi Tendon Organs

18

Romberg's Sign

Romberg's sign is positive if the patient requires vision to stand steadily.

19

What is the origin of the spinothalamic tract?

Nucleus Proprius

20

Brown-Sequard Lesion

- Proprioception lost on the side of the lesion
- Pain and temperature lost on the opposite side of the lesion

21

What is the only afferent that goes through the superior cerebellar peduncle?

Ventral Spinocerebellar Tract

22

What is the function of the corticospinal tract?

Controls fine movement

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