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A&P Exam 2 > Spinal cord > Flashcards

Spinal cord Flashcards

1
Q

Spinal cavity

A

Region inside vertebra where spinal cord sits

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2
Q

Length of spinal cord

A

Approximately 18 inches long

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3
Q

Spinal cord protected by:

A

Bones of vertebra

Meninges

Spaces b/t meninges and substances they contain

Denticulate ligaments

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4
Q

Protective tissue that totally surround spinal cord

A

Bones of spinal cord

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5
Q

Meninges

A

Membrane made of 3 layers

Surround spinal cord and brain

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6
Q

Order of meninges from most superficial to deepest

A

Dura mater

Arachnoid

Pie mater

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7
Q

Dura mater

A

Tough, fibrous layer of connective tissue

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8
Q

Arachnoid

A

Mesh-like connective Tissue

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9
Q

Pia mater

A

Soft, delicate connective tissue

Adheres tightly to brain and spinal cord

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10
Q

Spaces between meninges:

A

Epidural space

Sunderland space

Subarachnoid space

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11
Q

Epidural space

A

Deep to bones, superficial to dura mater

Filled with connective tissue, blood vessels, and fat

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12
Q

Subdural space

A

Deep to dura mater, superficial to arachnoid

Filled with serous fluid

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13
Q

Subarachnoid space

A

Deep to arachnoid, superficial to pia mater

Filled with cerebrospinal fluid

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14
Q

Denticulate ligaments

A

Tiny extension of meninges that anchor spinal cord to lateral edges of vertebra

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15
Q

Cervical enlargement

A

Most superior enlargement of spinal cord

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16
Q

Cervical enlargement nerves innervate:

A

Neck/scalp/ shoulders/ arms/ hands

17
Q

Thoracic region

A

Inferior to cervical enlargement

Spinal cord returns to narrow width

18
Q

Lumbar enlargement

A

Enlargement located inferiorly to thoracic region

19
Q

Lumbar enlargement nerves innervate:

A

Hips, back, and legs

20
Q

Conus medullaris

A

Inferior to lumbar enlargement

21
Q

Strand of pia mater from conus medullaris

A

Filum terminale

22
Q

Group of nerves that extend from conus medullaris

A

Cauda equina

A&P Exam 2 (8 decks)

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