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Neuro lab test 2
NEURO LAB TEST 2
25
Anatomy
Undergraduate 3
03/07/2012

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Term
spinal cord region basic info
Definition
- forms the CNS with the brain
- starts from medulla and ends @ L1 and L2 vertebrae
- 31 nerves emerge from spinal cord
Term
spinal cord function
Definition
- convey info between neurons connecting the peripheral structures to the brain
- process info in some cases
Term
4 regions of spinal cord
Definition
- cervical
- thoracic
- lumbar
- sacral
Term
anatomy of spinal region
Definition
- spinal cord is surrounded by adipose tissue, meninges, and cerebrospinal fluid
- the adipose tissue cushions the SC and is located in the epidural space
- meninges are connective tissue membrane covers and are continuous with cranial meninges
Term
3 layers of meninges
Definition
1) dura mater: outermost
2) arachnoid: between dura mater and pia mater
- subarachnoid: between arachnoid and pia mater. it contains CSF
3) pia mater: inner most
Term
dorsal root
Definition
- contains sensory axons bringing info to SC
- enlargement of dorsal root is the dorsal root ganglion which contains cell bodies of sensory neurons
Term
ventral root
Definition
- contain axon sending motor info to the periphery
Term
spinal nerve
Definition
- carry motor and sensory axons of a single spinal segment
Term
propiospinal axons
Definition
- begin and end within the SC
- adjacent to gray matter
- function as interneurons
Term
tract cells
Definition
- cells with long axons connecting the SC with the brain
Term
spinal tracts
Definition
- bundle of axons with the same origin and a common termination
- ascending: convey sensory info from cutaneous receptors, proprioceptors, and visceral receptors
- descending: convey motor info from the brain to the effectors
Term
meningomyelocele
Definition
- developmental disorder arising from failure of inferior neuropore to close
- ADD MORE INFO
Term
spastic cerebral palsy
Definition
- motor disorder, muscle hyperstiffness
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Term
multiple sclerosis
Definition
- demyelination of axons that can occur in numbeness
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Term
spinal region tumors
Definition
- cause pressure on neurons and vascular supple to SC
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Term
myelopathy due to cervical spondylosis
Definition
- degeneration of cervical vertebrae
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Term
lumbar stenosis
Definition
- produces lower limb and lower back pain
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Term
syringomyelia
Definition
- accumulation of CSF in the SC
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