Test Bank for CNIM (Latest 2023 - 2024) New Full Questions and Answers ( Included ) 100% Correct
- What is Coulomb's Law?
Answer: Like charges repel and unlike charges attract each other
- What are examples of good conductors?
Answer: Silver, copper, and gold
- What are examples of good insulators?
Answer: Glass, Plastic, Rubber
- What is a unit of measure of resistance?
Answer: Ohms
- What is resistance?
Answer: The opposition of flow of direct current (DC)
- What does impedance measure?
Answer: The opposition of flow of alternating current (AC)
7. AC is used when checking electrode impedance to:
Answer: Avoid electrode polarization
- Ohm's law is?
Answer: V=IxR
- If an electrical circuit has a resistance (R) of 1000 ohms and a voltage (E) of 10 volts, the
current (I) will be?
Answer: E=IxR 10= ? x 1000 =10/1000=? 10/1000= 0.01 Answer is I= 0.01amps
- The ability of a capacitor to store an electrical charge is?
Answer: Capacitance
- What is inductance?
Answer: Opposition to change in current flow
- What are the basic structural unit of the nervous system?
Answer: Neurons
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- The dendrites extend from what part of the neuron?
Answer: The cell body
- Axons conduct nerve impulses in what direction?
Answer: Away from the cell body towards the nerve terminals and synapses
- The resting membrane potential is?
Answer: -70 mV
- Sodium (Na+) has a higher concentration inside or outside the cell mem- brane?
Answer: Outside the cell membrane
- Postsynaptic Potentials are?
Answer: EPSP (excitatory) or IPSP (inhibitory)
- Name an Excitatory Neurotransmitter
Answer: Glutamate
- Name an Inhibitory Neurotransmitter
Answer: GABA and Glycine
- Where is the anatomic location of the Primary Somatosensory Cortex?
Answer: -Postcentral gyrus of the parietal lobe just posterior to the primary motor cotex.
- What are the three regions of the brainstem?
Answer: Midbrain, Pons, and Medulla
- What part of the Central Nervous System (CNS) controls vital life support systems (BP,
respiration, cardiovascular control)?
Answer: The brainstem
- The Medulla contains which cranial nerves?
Answer: VIII, IX, X, XI, XII
- At what level of the brianstem does the medial leminiscus cross over (decussate)?
Answer: Medulla
- Is the medial lemniscal tract a sensory or motor tract?
Answer: Sensory
- Nucleus Gracilis receives sensory information from the upper or lower extremities?
Answer: Lower extremities 2 / 3
- What are the synapses of the dorsal column pathway (medial lemniscal tract) on the way
to the sensory cortex?
Answer: 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
- How many cervical vertebrae are there?
Answer: 7
- Is the lateral corticospinal tract a sensory or a motor tract?
Answer: Motor
30. Name the major arterial supply to the brain:
Answer: 2 internal carotid arteries (ICA) and 2 vertebral arteries
- ICA divides into?
Answer: Anterior Cerebral Artery (ACA) and Middle Cerebral Artery (MCA)
- Does the ACA or the MCA supply the upper extremities?
Answer: MCA
- What is the major arterial supply to the brainstem?
Answer: Vertebrobasilar distribution
- What is the function of the Circle of Willis?
Answer: The Circle of Willis provides alternate routes for blood to reach the brain in the event of an occluded carotid or vertebral artery
- What is the blood supply to the spinal cord?
Answer: Branches of vertebral arteries: posterior and anterior spinal arteries and the radicular arteries.
- What is the Artery of Adamkiewicz?
Answer: The largest radicular artery that joins the anterior spinal artery between T8-T12. It is the major blood supply to the lower two-thirds of the anterior spinal artery.
- Which cranial nerve innervates the extrocular muscles?
Answer: CN VI Abducens
- What two cranial nerves are typically monitored during a vestibular schwannoma?
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Answer: CN VIII (vestibulocochlear) and CN VII (facial)