CNIM EXAM QUESTIONS AND ANSWERS
1. What is Coulomb's Law?: Like charges repel and unlike charges attract each other
2. What are examples of good conductors?: Silver, copper, and gold
3. What are examples of good insulators?: Glass, Plastic, Rubber
4. What is a unit of measure of resistance?: Ohms
5. What is resistance?: The opposition of flow of direct current (DC)
6. What does impedance measure?: The opposition of flow of alternating current
(AC)
7. AC is used when checking electrode impedance to:: Avoid electrode
polarization
8. Ohm's law is?: V=IxR
9. If an electrical circuit has a resistance (R) of 1000 ohms and a
voltage (E) of 10 volts, the current (I) will be?: E=IxR 10= ? x 1000 =10/1000=?
10/1000= 0.01 Answer is I= 0.01amps
10. The ability of a capacitor to store an electrical charge is?: Capacitance
11. What is inductance?: Opposition to change in current flow
12. What are the basic structural unit of the nervous system?: Neurons
13. The dendrites extend from what part of the neuron?: The cell body
14. Axons conduct nerve impulses in what direction?: Away from the cell body
towards the nerve terminals and synapses
15. The resting membrane potential is?: -70 mV
,16. Sodium (Na+) has a higher concentration inside or outside the
cell mem-brane?: Outside the cell membrane
EPSP (excitatory) or IPSP (inhibitory)
17. Postsynaptic Potentials are?:
18. Name an Excitatory Neurotransmitter: Glutamate
19. Name an Inhibitory Neurotransmitter: GABA and Glycine
20. Where is the anatomic location of the Primary Somatosensory
Cortex?: Post-central gyrus of the parietal lobe just posterior to the primary motor
cotex.
21. What are the three regions of the brainstem?: Midbrain, Pons, and
Medulla
22. What part of the Central Nervous System (CNS) controls vital life
support systems (BP, respiration, cardiovascular control)?: The
brainstem
23. The Medulla contains which cranial nerves?: VIII, IX, X, XI, XII
24. At what level of the brianstem does the medial leminiscus cross
over (de-cussate)?: Medulla
25. Is the medial lemniscal tract a sensory or motor tract?: Sensory
,26. Nucleus Gracilis receives sensory information from the upper o r lower
27. What are the synapses of the dorsal column pathway (medial
lemniscal tract) on the way to the sensory cortex?: Peripheral nerves ascend to
spinal cord via dorsal root, synapse at medulla in the nucleus gracilis (lower) and
nucleus cuneatus (upper) nerve impulses decussates as it leaves medulla, a synapse occurs
at the thalamus and goes to sensory cortex
28. How many cervical vertebrae are there?: 7
29. Is the lateral corticospinal tract a sensory or a motor tract?: Motor
30. Name the major arterial supply to the brain:: 2 internal carotid arteries (ICA)
and 2 vertebral arteries
31. ICA divides into?: Anterior Cerebral Artery (ACA) and Middle Cerebral Artery (MCA)
32. Does the ACA or the MCA supply the upper extremities?: MCA
33. What is the major arterial supply to the brainstem?: Vertebrobasilar
distribution lternate routes for
34. What is the function of the Circle of Willis?: The Circle of Willis
provides a blood to reach the brain in the event of an occluded carotid or
vertebral artery
35. What is the blood supply to the spinal cord?: Branches of vertebral arteries:
posterior and anterior spinal arteries and the radicular arteries.
anterior spinal
36. What is the Artery of Adamkiewicz?: The largest radicular artery rtery.
that joins the artery between T8-T12. It is the major blood supply to the
lower two-thirds of the anterior spinal a
37. Which cranial nerve innervates the extrocular muscles?: CN VI
Abducens
, 38. What two cranial nerves are typically monitored during a vestibular
schwan-noma?: CN VIII (vestibulocochlear) and CN VII (facial)
39. What muscles are typically recorded from to monitor the facial nerve
EMG?-
: Orbicularis oculi and orbicularis oris
40. Direct stimulation of cranial nerve V will result in:: Jaw movement from
masseter muscles
41. What cranial nerves are typically monitored during a Microvascular
Decom-pression of CN VII?: Typically CN VII and CN VIII. Hearing loss is a common
complication of the surgery
42. Dorsal roots contain sensory or motor fibers?: Sensory
43. How many spinal nerves are there?: 31 pairs
1. What is Coulomb's Law?: Like charges repel and unlike charges attract each other
2. What are examples of good conductors?: Silver, copper, and gold
3. What are examples of good insulators?: Glass, Plastic, Rubber
4. What is a unit of measure of resistance?: Ohms
5. What is resistance?: The opposition of flow of direct current (DC)
6. What does impedance measure?: The opposition of flow of alternating current
(AC)
7. AC is used when checking electrode impedance to:: Avoid electrode
polarization
8. Ohm's law is?: V=IxR
9. If an electrical circuit has a resistance (R) of 1000 ohms and a
voltage (E) of 10 volts, the current (I) will be?: E=IxR 10= ? x 1000 =10/1000=?
10/1000= 0.01 Answer is I= 0.01amps
10. The ability of a capacitor to store an electrical charge is?: Capacitance
11. What is inductance?: Opposition to change in current flow
12. What are the basic structural unit of the nervous system?: Neurons
13. The dendrites extend from what part of the neuron?: The cell body
14. Axons conduct nerve impulses in what direction?: Away from the cell body
towards the nerve terminals and synapses
15. The resting membrane potential is?: -70 mV
,16. Sodium (Na+) has a higher concentration inside or outside the
cell mem-brane?: Outside the cell membrane
EPSP (excitatory) or IPSP (inhibitory)
17. Postsynaptic Potentials are?:
18. Name an Excitatory Neurotransmitter: Glutamate
19. Name an Inhibitory Neurotransmitter: GABA and Glycine
20. Where is the anatomic location of the Primary Somatosensory
Cortex?: Post-central gyrus of the parietal lobe just posterior to the primary motor
cotex.
21. What are the three regions of the brainstem?: Midbrain, Pons, and
Medulla
22. What part of the Central Nervous System (CNS) controls vital life
support systems (BP, respiration, cardiovascular control)?: The
brainstem
23. The Medulla contains which cranial nerves?: VIII, IX, X, XI, XII
24. At what level of the brianstem does the medial leminiscus cross
over (de-cussate)?: Medulla
25. Is the medial lemniscal tract a sensory or motor tract?: Sensory
,26. Nucleus Gracilis receives sensory information from the upper o r lower
27. What are the synapses of the dorsal column pathway (medial
lemniscal tract) on the way to the sensory cortex?: Peripheral nerves ascend to
spinal cord via dorsal root, synapse at medulla in the nucleus gracilis (lower) and
nucleus cuneatus (upper) nerve impulses decussates as it leaves medulla, a synapse occurs
at the thalamus and goes to sensory cortex
28. How many cervical vertebrae are there?: 7
29. Is the lateral corticospinal tract a sensory or a motor tract?: Motor
30. Name the major arterial supply to the brain:: 2 internal carotid arteries (ICA)
and 2 vertebral arteries
31. ICA divides into?: Anterior Cerebral Artery (ACA) and Middle Cerebral Artery (MCA)
32. Does the ACA or the MCA supply the upper extremities?: MCA
33. What is the major arterial supply to the brainstem?: Vertebrobasilar
distribution lternate routes for
34. What is the function of the Circle of Willis?: The Circle of Willis
provides a blood to reach the brain in the event of an occluded carotid or
vertebral artery
35. What is the blood supply to the spinal cord?: Branches of vertebral arteries:
posterior and anterior spinal arteries and the radicular arteries.
anterior spinal
36. What is the Artery of Adamkiewicz?: The largest radicular artery rtery.
that joins the artery between T8-T12. It is the major blood supply to the
lower two-thirds of the anterior spinal a
37. Which cranial nerve innervates the extrocular muscles?: CN VI
Abducens
, 38. What two cranial nerves are typically monitored during a vestibular
schwan-noma?: CN VIII (vestibulocochlear) and CN VII (facial)
39. What muscles are typically recorded from to monitor the facial nerve
EMG?-
: Orbicularis oculi and orbicularis oris
40. Direct stimulation of cranial nerve V will result in:: Jaw movement from
masseter muscles
41. What cranial nerves are typically monitored during a Microvascular
Decom-pression of CN VII?: Typically CN VII and CN VIII. Hearing loss is a common
complication of the surgery
42. Dorsal roots contain sensory or motor fibers?: Sensory
43. How many spinal nerves are there?: 31 pairs
