Chapter 16: Spinal Cord And Spinal Nerves Flashcards

1
Q

Spinal cord

A
  • link between the brain and the rest of the body
  • controls reflexes
  • site for integration of neuronal stimulation
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2
Q

Spinal nerve functions

A
  • pathway for sensory and motor impulses
    -responsible for reflexes
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3
Q

Spinal meninges

A

Cover the spinal cord that excisions from the intervertebral foramina

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4
Q

Cerebral spinal fluid

A

Shock absorbing fluid in the spinal cord

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5
Q

Denticulate ligament

A

Thickenings of the pia mater that project and connect the arachnoid mater to the dura mater

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6
Q

Dura mater

A
  • most superficial
  • made of dense p, irregular connective tissue
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7
Q

Epidural space

A
  • space between the dura mater and the walls of the vertebral canal
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8
Q

Arachnoid mater

A
  • middle layer
  • Avascular covering
  • contain collagen fibres and some elastic fibers
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9
Q

Subdural space

A
  • between the dura mater and the arachnoid
  • contains interstitial fluid
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10
Q

Pia mater

A
  • Inner most layer
  • highly vascular, transparent connective tissue
  • adheres to the surface of the spinal cord
  • contains squamous and cuboidal cells within interlacing bundles if collage and elastic fibres
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11
Q

Gross anatomy of spinal cord: parts

A

Superior to inferior
- cervical
- thoracic
- lumbar
- sacral
- coccygeal

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12
Q

Conus medullaris

A

The tapering inferior me of the spinal cord

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13
Q

Cauda equine

A

“Hourses tail”
- axons that extend inferiorly from the spinal cords conus medullaris

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14
Q

Volume terminale

A

The strand of pia mater within cauda equina that attaches to the medullaris to the coccyx

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15
Q

Cervical enlargement

A
  • Located in the inferior cervical part of the spinal cord
  • inner areas the upper limbs
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16
Q

Lumbosarcal enlargement

A
  • extends through the lumbar and sacral parts of the spinal cord
  • innervates the Lower limbs
17
Q

Grey matter

A
  • unmyelinated axons and glial cells
    Contains:
  • posterior horn
  • lateral horn
  • anterior horn
  • gray commissure
18
Q

White matter

A

Myelinated axons
Contains:
- posterior funiculus
- lateral funiculus
- anterior funiculus

19
Q

Anterior horns

A
  • Grey matter
  • House somatic motor neurons
  • Inner age skeletal muscles
20
Q

Lateral horns

A

Grey matter
- contain motor neurons
- innervate cardiac muscles, smooth muscles, and glands

21
Q

Posterior horns

A
  • Grey matter
  • sensory neurons and cell bodies of interneurons
  • receive sensory information from the body
22
Q

Gray commissure

A

Grey matter
- houses a narrow central canal

23
Q

Posterior ramus

A

Innervates the deep muscles and skin of the back and posterior surface of the trunk

24
Q

Anterior ramus

A

Innervates the anterior and lateral portions of the trunk and the upper and lower limbs

25
Q

Rami

A

Communicates
Extended between the spinal nerves and the sympathetic trunk ganglia

26
Q

Posterior/ doral root

A

Sensory

27
Q

Anterior/ ventral root

A

Motor

28
Q

Spinal plexus

A

Network of axons