Spinal Cord Anatomy Flashcards Preview

Pathology > Spinal Cord Anatomy > Flashcards

Flashcards in Spinal Cord Anatomy Deck (22)
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1
Q

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

A

Dorsal/Lateral/Ventral Funiculus

2
Q

What is gray matter?

A

Cell bodies

3
Q

What is white matter?

A

Fibers - axons

4
Q

Where is the alar plate located?

A

Dorsal Funiculus

5
Q

Where is the basal plate located?

A

Ventral Funiculus

6
Q

Dorsal Horn - Substantia Gelatinosa

A

Small compact cells that modulate pain sensory input

7
Q

Dorsal Horn - Nucleus Proprius

A

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

8
Q

Intermediate Gray Area - Nucleus Dorsalis

A

AKA “Clark’s Nucleus” and is used for the dorsal spinocerebellar tract

9
Q

Lateral Horn - Intermediolateral Nucleus

A

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

10
Q

Intermediate Gray Area - Intermediomedial Nucleus

A

Receives visceral afferents - not as important as IML

11
Q

Ventral Horn - Medial and Lateral Motor Nuclei

A

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

12
Q

What are the non-encapsulated receptors?

A
  • Free Nerve Endings
  • Merkel’s Disk
  • Hair Follicle
13
Q

What are the fast adapting receptors?

A
  • Hair Follicle
  • Meissner’s Corpuscle
  • Pacinian Corpuscle
14
Q

Meissner’s Corpuscle Function

A

2 point discrimination

15
Q

Pacinian Corpuscle Function

A

Vibration

16
Q

What information does the dorsal column pathway relay?

A

GSA

  • 2 point discrimination
  • Vibration sense
  • Proprioception (positional)
17
Q

What are the receptors of the DCP?

A
  • Meissner’s Corpuscle
  • Pacinian Corpuscle
  • Neuromuscular Spindle
  • Golgi Tendon Organs
18
Q

Romberg’s Sign

A

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

19
Q

What is the origin of the spinothalamic tract?

A

Nucleus Proprius

20
Q

Brown-Sequard Lesion

A
  • Proprioception lost on the side of the lesion

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

21
Q

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

A

Ventral Spinocerebellar Tract

22
Q

What is the function of the corticospinal tract?

A

Controls fine movement

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