Chapter 12 (3)

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What is epidural space?
- Space between dura mater and vertebral canal.
- Contains areolar connective tissue, blood vessels, and protective adipose tissue.
What supporting ligament causes prevention of lateral movement of spinal cord?

Denticulate ligament
What supporting ligament causes prevention of superior–inferior movement of spinal cord?

Coccygeal ligament
What does the posterior gray horn contain?

somatic & visceral sensory nuclei
What does the lateral gray horn contain and where is it located?
- Only in thoracic and lumbar segments.
- Contains visceral motor nuclei.
What does the anterior gray horns contain?

Contains somatic motor nuclei
What do gray commisures contain?

contain axons that laterally cross spinal cord.
What are nuclei in the nervous system?

Groups of cell bodies.
What type of nuclei receive and relay sensory information from peripheral receptors?

Sensory
What type of nuclei issue motor commands to peripheral effectors?

Motor
What are coulmns of white matter?

areas of white matter on spinal cord sides.
Describe the posterior white coulmn.

Between posterior gray horns and posterior median sulcus.
Describe the lateral white coulmn.

Either side between anterior and posterior column
Describe the anterior white coulmn.

Between anterior gray horns and median fissure
Describe the anterior white commisure.

Interconnects anterior white column
What are white matter tracts?

bundle of axons relatively uniform in diameter, myelination, conduction speed, and functional type.
Describe ascending tracts.
- Carry sensory information toward brain.
- Found in white matter.
Describe descending tracts.
- Convey motor commands to the spinal cord.
- Found in white matter.

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Card Set

Chapter 12 (3)

Description

Lecture test number one.

Updated

2012-01-23T21:34:50Z

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