2024 ASET CNIM Exam - 1. Resting membrane potential is created by dif...

2024 ASET CNIM Exam New Full Questions and Answers ( Included ) 100% Correct

• Resting membrane potential is created by differences between the inside and outside of the

cell in ion concentrations of

• K+
• K+ and Ca++
• K+, Na+ and Cl-
• Na+, Ca++ and Cl-

Answer: K+, Na+, and Cl-

• Excitation of the postsynaptic neuron is caused by the neurotransmitter

• gamma amino butyric acid
• glycine
• para amino butyric acid
• glutamate

Answer: Glutamate

• Wave III of the BAER is generated by the

• superior olivary complex
• inferior colliculus
• lateral lemniscus
• medial geniculate

Answer: Superior olivary complex

• Lying between the adjacent surfaces of the vertebral bodies and bonding them together, are

the

• pedicles
• intervertebral discs
• supraspinous ligaments
• spinal nerves

Answer: Intervertebral discs

• Which of the following UE SSEP response is considered a "stationary potential"

1. N20

2. N13

3. P14 1 / 4

4. N18

Answer: N13

• The initial waveform recorded of a near-field potential is

• always obscured by stimulus artifact

• negative due to depolarization of membrane potentials

• positive due to electronic depolarization of the membrane under the record- ing electrode

• of very low amplitude due to the significant distance between the generator and recording

electrode

Answer: Positive due to electrotonic depolarization of the mem- brane under the recording electrode

• Nerves of the body, such as the ulnar, median, and femoral, are formed from the

• white matter of the spinal cord
• dorsal and ventral rami
• cervical spinal cord
• ventral ganglion

Answer: Dorsal and ventral rami

• On the SSEP, the electrode at records a spinal cord response

1. T12

• CPz
• the iliac crest
• the popliteal fossa

Answer: T12

• Projecting laterally from the junction of the pedicle and lamina and serving as a lever for

muscle and ligaments, are the

• intervertebral discs
• mamillary processes
• intervertebral foramen
• transverse processes

Answer: Transverse processes

• / 4

• Synaptic transmission, and/or changes in the thalamocortical projections, are believed to

produce

• subcortical potentials
• cortical potentials
• the erb's point potential
• the P100 potential

Answer: Cortical potentials

• The section of the brainstem that is continuous with the spinal cord and includes the

decussation of the pyramids, is the

• medulla oblongata
• pons

• dorsal column
• midbrain

Answer: medulla oblongata

• The ulnar nerve originates from nerve roots at

1. C5-C6

2. C6-C7

3. C7-C8

4. C7-T1

Answer: C7-T1

• The common peroneal nerve arises from the superior angle of the popliteal fossa of the

• superior tibial nerve
• superior femoral nerve
• internal popliteal nerve
• sciatic nerve

Answer: Sciatic nerve

• The resting membrane potential of a neuron is

• +20mV
• +70mV
• -20mV
• -70mV

Answer: -70mV 3 / 4

• The innermost connective tissue membrane covering the brain is the

• dura
• pia
• arachnoid

4. falx cerebri: Pia

• Which of the following can inhibit the postsynaptic neuron

• gamma amino butyric acid
• acetylcholine
• para amino butyric acid

4. glutamate: gamma amino butyric acid (GABA)

• The median nerve originates from nerve roots

1. C5- T1

2. C3-C7

3. C5-C6

4. C4-C6: C5-T1

• An inhibitory transmitter causes the resting membrane potential of the post-synaptic

neuron to

• play a critical role in the development of the myelin sheath
• be more negative
• resist the effect of muscle relaxants

4. become hyperpolarized: Become hyperpolarized

• The peroneal and tibial nerves are divisions of the

• brachial plexus
• deep peroneal nerve
• sciatic nerve

4. lumbar plexus: Sciatic nerve

• Cortical evoked potentials are largely produced by

• depolarization propagated along the nerve fibers
• actions potentials of the connecting axonal tracts
• EPSPs and IPSPs
• / 4