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Neuroanatomy Lecture > Spinal Cord Anatomy > Flashcards

Spinal Cord Anatomy Flashcards

1
Q

In general, where is the end of the spinal cord?

A

L5-L7

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2
Q

How many spinal nerves are associated with a spinal cord segment?

A

a pair

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3
Q

How many spinal nerve pairs are there?

A

36

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4
Q

How many spinal cord segements are associated with the cervical vertebrae?

A

8

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5
Q

How many spinal cord segments are assoociated with the thoracic vertebrae?

A

13

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6
Q

How many spinal cord segments are associated with the lumbar vertebrae?

A

7

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7
Q

How many spinal cord segments are associated with the sacral vertebrae?

A

3

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8
Q

How many spinal cord segments are associated with the caudal vertebrae?

A

5

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9
Q

What is the cauda equina?

A

a collection of sacral and caudal spinal roots located in the foramen of the sacrum

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10
Q

Where is the cervical enlargement of the spinal cord?

A

from C6-T1

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11
Q

What is formed from the cervical enlargement of the spinal cord?

A

the brachial plexus

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12
Q

Where is the lumbosacral enlargement of the spinal cord?

A

from L4 - S1

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13
Q

What is formed from the lumbosacral enlargement?

A

the lumbosacral plexus

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14
Q

What are the internal structures of the spinal cord associated with white matter?

A

dorsal funiculus, lateral funiculus, and ventral funiculus

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15
Q

What tracts are located in the dorsal funiculus?

A

sensory tracts only

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16
Q

What tracts are located in the lateral funiculus?

A

sensory and motor tracts

17
Q

What tracts are located in the ventral funiculus?

A

sensory and motor tracts

18
Q

What internal structures of the spinal cord are associated with grey matter?

A

dorsal and ventral horn

19
Q

What type of neurons are located in the dorsal horn?

A

sensory neurons

20
Q

What type of neurons are located in the ventral horn?

A

motor neurons

21
Q

What is white matter made up of?

A

axons and glial cells

22
Q

What is grey matter made up of?

A

perikarya and their axons, dendrites, and glial cells

23
Q

What are the three basic functions of the spinal cord?

A

mediates sensory and motor signals to/from the brain stem and cerebral cortex and mediates both sensory and motor spinal reflexes

24
Q

If there is a lesion on an axon where will the degeneration occur?

A

distal to the lesion

25
Q

If there is a lesion on a cell body of an axon where will the degeneration occur?

A

the whole axon will die

Neuroanatomy Lecture (17 decks)

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