Spinal Cord Flashcards
What kind of information carried the the anterior and lateral white columns?
Mixed information bother efferent and afferent.
How could repair a botch spinal tap?
Make is a blood patch
What is the nomenclature for a tract descending form the brain?
End is spinal is descending
How does Tertiary Syphilis work?
Progressive degeneration of posterior portions of spinal cord & neurological loss
loss of somatic sensations
proprioceptive impulses fail to reach cerebellum
Damage to descending tracts that affect cerebellum
Filum terminale
stabilize spinal column in canal - when not correct can be a whether spinal cord
Dorsal Grey Horn
Works with Dorsal rood ganglion send sensory information
How does a stretch reflex work
Sensory information about force or speed of force will cause muscle to contract. Protects you form fall down.
Where are the upper motor neurons and what are their functions? What are the symptoms of damage?
In cerebral cortex. Inhibits lower motor neurons. Damage to upper motors neuron causes spastic paralysis
Where are the lower motor neurons and where are their functions? What are the symptoms of damage?
In the spinal cord, cats muscle contractions. Damage leads to placid paralysis
What is a 2nd order neuron and where does it terminate?
2nd order neurons conduct information form brain stem or spinal cord to in the thalamus. They cross over before Thalamus
What is a spinal nerve?
A mixed nerve that carries both motor and sensory information. They are formed for the dorsal root (sensory, afferent) and ventral root (motor efferent)
Which is larger the ventral or dorsal Ramus and why?
The ventral is much large because is supplies all you front of body with includes fine motor and
What happens to its sensitivity when muscle s spindle is compressed or extended?
Compressed decreases sensitivity Extension increases sensitivity. Sensitivity increase can be done by the sympathetic nervous system in preparations for a fight
What do Commisural Fibers do?
Connect two hemispheres together
What is a charecteristics and functions of the CSF ( cerebral spinal fluid)
It has higher sodium and lower potassium than interstitial fluid. It supports the nervous tissue by buoying the lipid rich myelin. It acts as a shock absorber
Lateral Grey Horn
General visceral efferent - cell bodies for autonomic nervous system preganlionic cells of autonomic nervous system
ALS
Inability of astorcytes to metabolizes Glutmate kills neurons ing the anterior grey horn
Polio
kills neurons in Anterior Grey Horn
Conus medullaris
Cone shape end at the end end of the spinal cord
Where is the integration center for the Spinal reflexes?
In the grey matter of the spinal column
What are the two enlargements of the spinal cord and what is their purpose?
Cervical and Lumbar. They are the point where limbs come in.
Where are the somatic sensory cells locate
In the dorsal root gingival
What is a dermatome?
An area of skin supplied by one nerve, but overlaps with other for redundancy.
What is a 3rd order neuron and where does it terminate?
Third-order neuron conducts impulses from thalamus to primary somatosensory cortex
