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BMA SEMSTER ONE > Practical Four > Flashcards

Practical Four Flashcards

1
Q

where does the spinal cord terminate

A

conus medullaris

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2
Q

cauda equina

A

collection of Lumbar and Sacral Nerve roots

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3
Q

Filum Terminale

A

a ligament which anchors spinal cord in place

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4
Q

how many pairs of nerves arise from the spinal cord

A

31

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5
Q

what segments of the spinal cord lie within conus medullaris

A

L1 - L2

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6
Q

what does the central canal and why

A

Cerebrospinal Fluid to:

  • nourish
  • protect
  • remove waste
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7
Q

Structure of Gray matter

A
  • neuron cell bodies
  • unmyelinated aoxns
  • neuroglia
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8
Q

Structure of White Matter

A
  • myelinated axons
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9
Q

what does the dorsal root consist of

A

axons of 1st order sensory neurons

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10
Q

what does ventral root consist of

A

axons of motor neurons

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11
Q

Sensory Function - Vibration

receptors, tract, pathway, location

A
  • mechano receptors
  • ascending FG + FC tract
  • Posterior Column Pathway
  • Posterior White Column
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12
Q

Sensory Function - Fine Touch

receptors, tract, pathway, location

A
  • Mechanoreceptors
  • ascending FG + FC tract
  • posterior column pathway
  • posterior white column
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13
Q

Sensory Function - Crude Touch

receptors, tract, pathway, location

A
  • Mechanoreceptors
  • ascending L/A spoinothalamic
  • spinothalamic pathway
  • anterior white column
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14
Q

Sensory Function - Pain

receptors, tract, pathway, location

A
  • Nocioceptors
  • Ascending L/A spinothalamic tract
  • Spinothalamic Pathway
  • Anterior White Column
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15
Q

Sensory Function - Temp

receptors, tract, pathway, location

A
  • Thermoreceptors
  • Ascending L/A Spinothalamic tract
  • Spinothalamic Pathway
  • anterior white column
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16
Q

Sensory Function - Proprioception

receptors, tract, pathway, location

A
  • Proprioceptors
  • FG + FC
  • Posterior Column Pathway
  • Posterior White Column
17
Q

Which three neurons relay general sensory info to primary somatosensory cortex and where do they terminate

A 
1st = brain stem 
2nd = posterior gray horn 
3rd = primary somatosensory cortex
18
Q

what does an abnormal response to the romburg test mean

A

problems with

  • vestibular pathway
  • proprioception
  • spinothalamic pathway
  • posterior column pathway
19
Q

Assessment of Motor Function - Gait

info, pathway, tract

A
  • somatic motor output of limbs
  • lateral corticospinal pathway
  • descending corticospinal tract
20
Q

Assessment of Motor Function - Point to Point Movement

info, pathway, tract

A
  • Somatic Motor Output of Limbs
  • Lateral corticospinal pathway
  • descending corticospinal pathway
21
Q

what is the signifigance of a positive/abnormal babinski sign

A

primary motor cortex or descending corticospinal tract is damaged

BMA SEMSTER ONE (11 decks)

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