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Anatomy > Spinal Cord and Spinal Nerves > Flashcards

Spinal Cord and Spinal Nerves Flashcards

1
Q

The spinal cord is a part of what system?

A

Central Nervous System

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2
Q

Characteristics of the Spinal Cord… (4)

A
  1. Slender nerve column
  2. About 45 cm long
  3. Starts at foramen magnum and ends between L1 and L2 (does not go to the sacrum)
  4. 31 pairs of spinal nerves
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3
Q

Overall structure of the Spinal Cord…

A
  • Bilateral symmetry
  • Consists of both gray and white matter
  • Central canal
  • 2 grooves
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4
Q

Hole down the center of the spinal cord, continuous with brain ventricles, both contain CSF

A

Central Canal

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5
Q

2 grooves within the Spinal Cord

A
  1. Anterior median fissure

2. Posterior median sulcus

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6
Q

-Swollen regions of the spinal cord

A

Enlargements

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7
Q

2 examples of enlargements

A
  1. Cervical Enlargements

2. Lumbar Enlargements

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8
Q

The inferior most tip of the spinal cord; cone shaped

A

Conus medullaris

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9
Q
  • Means horses tail

- Bundle of nerves inferior to spinal cord

A

Cauda Equina

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10
Q

Inferior most spinal nerve

A

Filum Terminale

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11
Q

-Cell bodies, dendrites, and synapses
-Projections called horns
-Cell bodies organized into nuclei
(sensory and motor)

A

Gray Matter

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12
Q

Inferior horns of the gray matter (3)

A
  1. Posterior horn
  2. Anterior gray horn
  3. Lateral gray horn
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13
Q

Gray commissure (2)

A
  1. Anterior commissure
  2. Posterior commissure
    (separated by the central canal)
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14
Q

Tracts and columns aka…

A

White matter

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15
Q

Types of columns (3)

A
  1. Posterior White Column
  2. Anterior white column
  3. Lateral White Column
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16
Q

Types of Tracts (2)

A
  1. Ascending tract

2. Descending Tract

17
Q
  • Membranes covering the CNS

- Are similar in both brain and spinal cord

A

Meninges

18
Q

Meninges are split into layers called…

A

Mater

19
Q

Vertebrae consist of…

A

Vertebral arches

20
Q
  • Space between meninges and vertebrae

- Contains blood vessels and adipose

A

Epidural Space

21
Q

________ connect to CT covering of spinal nerves

A

Meninges

22
Q

3 types of Spinal Meninges

A
  1. Dura Mater
  2. Arachnoid Mater
  3. Pia Mater
23
Q

Characteristics of Dura Mater (5)

A
  1. Tough Mother
  2. Durable
  3. Deep to epidural space
  4. Superficial to subdural space
  5. Stabilized by coccygeal ligament
24
Q

Characteristics of Arachnoid Mater (3)

A
  1. Spidery mother
  2. Superficial to subarachnoid space
  3. Contains CSF

Anatomy (24 decks)

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