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Neuroanatomy I > Organization of Spinal Cord DOCX > Flashcards

Organization of Spinal Cord DOCX Flashcards

1
Q

Cervical enlargement

A

C5 - T1

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2
Q

Lumbosacral enlargement

A

L2 - S3

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3
Q

Lumbar puncture

A

Btw L3 & L4

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4
Q

Cauda equina

A

Horse tail consists of dorsal ventral roots

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5
Q

Spinal cord gray matter

A 
Butterfly or H shaped
Contains nerve soma & neuroglia.
Dendrites & axons also found.
Synaptic contacts occur
Dorsal Horn
Intermediate Zone
Lateral Horn
Ventral Horn
Laminae
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6
Q

Dorsal horns contain

A

Central process of pseudo unipolar neurons whose soma are in DRG
Tract cells from ascending
Axon term of descending

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7
Q

Intermediate zone

A

Interneurons which are local circuitry neurons

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8
Q

Lateral Horns

A

Contain preganglionic sympathetic nerve cell body

Present at T1 -L2 spinal cord

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9
Q

Ventral Horns

A

Contains motor neurons whose axons innervate skeletal muscle
Medial: Axial muscles
Lateral: Limb muscles

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10
Q

Laminae of Rexed

A

10 layers of neurons in spinal cord

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11
Q

Substantia gelatinosa

A

Lamina II
Interneurons which play a role in modulation of nociceptive transmission
Special area that not all info make it up to
brain

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12
Q

Nucleus proprius

A

Laminae IV, V & VI

neurons of the spinothalamic tract

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13
Q

Lamina IX

A

Contains motor neurons whose axons run in peripheral nerves to innervate skeletal muscles

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14
Q

Intermediolateral cell column

A

Column of autonomic neurons in the T & upper L segments

Cell bodies of preganglionic sympathetics

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15
Q

Nucleus dorsalis

A

Clarke’s column
Column of neurons in the T & upper L segments
Origin of the dorsal spinocerebellar tract

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16
Q

Sacral autonomic nucleus

A

Column of neurons in the mid sacral segments

Preganglionic parasympathetics

17
Q

What is white matter?

A

Surrounds gray matter
Myelinated axons & neuroglia (some unmyelinated)
Tracts originate in the SC & ascend to high centers
Corticospinal

18
Q

Dorsal Funiculus

A 
Posterior column
Fasiculus gracilis (medially)
Fasiculus cuneatus (laterally)
Relay discriminative touch
Vibratory
Position
Light touch
19
Q

Lateral funiculus

A 
Lateral corticospinal
Rubrospinal
Dorsal spinocerebellar
Lateral spinothalamic
Ventral spinocerebellar

Neuroanatomy I (7 decks)

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