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Anatomy > Spinal Cords & Nerves > Flashcards

Spinal Cords & Nerves Flashcards

1
Q

The 2 components of the nervous system

A
  1. Central Nervous System
  2. Peripheral Nervous System
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2
Q

CNS includes

A

Brain, Optical nerve, Spinal cord

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3
Q

PNS includes

A

All non CNS tissues

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4
Q

Function of nervous system

A
  • Rapid communication system
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5
Q

What is the meninges?

A
  • 3 layers of connective tissues
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5
Q

Where does the Spinal cord come from

A
  • Continuation of the brainstem
  • Meninges surrounds the spinal cord
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6
Q

What part is the Conus Medullaris

A

Caudal Apex of spinal cord at L1/L2

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7
Q

What is Filum terminale?

A
  • Thin ligament extending from conus
    medullaris to the coccyx
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8
Q

What does filum terminale do?

A

Secures the spinal cord inferiorly

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9
Q

What’s the grey matter?

A

The middle part of the spinal cord

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10
Q

What does dorsal horn do?

A

Processess sensory information

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11
Q

What does the ventral horn do?

A

Processess motor commands

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12
Q

What’s the white matter?

A

Neural axon
The outer part of the spinal cord

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13
Q

What’s neural axon?

A

A pathway to and from the brain

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14
Q

What’s the central canal?

A

Middle of the spinal cord

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15
Q

Where does the central canal come from?

A

The 4th ventricle of the brain

16
Q

Information encoded in nerve fibres is either transmitted
into the CNS is

A

Afferent

17
Q

Information transmitted from CNS to periphery is

A

Efferent

18
Q

3 layers that surrounds and protects the spinal cord are

A

dura matter - tough outer layer
Arachnid matter - Delicate middle layer
Pia matter - firmly achored onto surface of spinal cord

19
Q

How does spinal nerve exit vertebral canal?

A

Via intervertebral foramina

20
Q

What are the 2 types of spinal nerves?

A

Sensory and motor

21
Q

How many pairs of spinal nerves are there

A

31 pairs

22
Q

What is Cauda equina

A

A cluster of spinal nerves within the vertebral column

23
Q

What does posterior (dorsal) nerve roots control?

A

Sensory

24
Q

What does anterior (ventral) nerve roots control?

A

Motor

25
Q
A
26
Q

What does the acronym SAME stand for?

A

Sensor Afferent Motor Efferent

27
Q

What does the acronym DAVE stand for?

A

Dorsal (Posterior) Afferent (sensor) Ventral (Anterior) Efferent (Motor)

28
Q

What are the 4 main nerve plexuses?

A

Cervical = C1 - C5
Brachial = C5 - T1
Lumbar = L1 - L4
Sacral = L4 - S4

29
Q

What reminds as individual nerves?

A

Thoracic = T2 - T12

Anatomy (13 decks)

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