PGY 451 EXAM 1 QUESTIONS AND VERIFIED
ANSWERS
Which of the following is used to treat multiple sclerosis?
A. Physotigmine
B. BOTOX
C. Atropine
D. Acetylcholine
E. Interferon Beta-1A
E. Interferon Beta 1-A
Which of the following is true regarding the parasympathetic nervous system?
A. It uses norepinephrine and epinephrine as neurotransmitters.
B. It only uses acetylcholine as a neurotransmitter
C. Its preganglionic neurons can originate from T2 segment of the spinal cord
D. It is responsible for increasing the heart rate
E. It usually generats a wide-spread response in the body
B. It only uses acetylcholine as a neurotransmitter
What does lidocaine do when you use it to treat a bee sting on your skin?
A. It blocks the release of acetylcholine at the NMJ
B. It increases the release of acetylcholine at the NMJ
C. It blocks the generation of action potentials in the DRG neuron
D. It increases the generation of action potentials in the DRG neurons
E. It. blocks voltage gated K channels in the skin cells
C. It blocks the generation of action potentials in the DRG neuron
NMDA receptors are enriched in
A. nodes of Ranvier
B. Dendritic spines
C. NMJ
D. synaptic vesicles
E. symmetric synapses
B. dendritic spines
The human central nervous system is generated from which of the following?
, A. the neural tube
B. The neural ring
C. The neural triangle
D. The neural crest
E. The neural duct
A. The neural tube
6. The Nernst equilibrium potential of Cl is dependent on which of the following?
A. Intracellular [Ca]
B. Intracellular [Na]
C. Intracellular [K]
D. Temperature
E. None of the above
D. Temperature
7. Which of the following happens in hyperkalemia?
A. E(k) is decreased
B. E(k) is increased
C. E(k) does not change
D. E(na) is increased
E. E(na) is decreased
A. E(k) is increased
At the rest membrane potential of a typical neuron, which is true?
A. There is no net movement of Na
B. Na has a strong driving force to enter the neuron
C. Na has a strong driving force to exit the neuron
D. There is no net movement of K
E. There is no net movement of Cl
B. Na has a strong driving force to enter the neuron
What causes the semitendinosis to relax in the stretch reflex in response to a tendon
tap?
A. The interneuron in the spinal cord activates the semitendinosis
B. Acetylcholine is not released on the semitendinosis
C. GABA is released on the semitendinosis
D. Glutamate is released on the semitendinosis
ANSWERS
Which of the following is used to treat multiple sclerosis?
A. Physotigmine
B. BOTOX
C. Atropine
D. Acetylcholine
E. Interferon Beta-1A
E. Interferon Beta 1-A
Which of the following is true regarding the parasympathetic nervous system?
A. It uses norepinephrine and epinephrine as neurotransmitters.
B. It only uses acetylcholine as a neurotransmitter
C. Its preganglionic neurons can originate from T2 segment of the spinal cord
D. It is responsible for increasing the heart rate
E. It usually generats a wide-spread response in the body
B. It only uses acetylcholine as a neurotransmitter
What does lidocaine do when you use it to treat a bee sting on your skin?
A. It blocks the release of acetylcholine at the NMJ
B. It increases the release of acetylcholine at the NMJ
C. It blocks the generation of action potentials in the DRG neuron
D. It increases the generation of action potentials in the DRG neurons
E. It. blocks voltage gated K channels in the skin cells
C. It blocks the generation of action potentials in the DRG neuron
NMDA receptors are enriched in
A. nodes of Ranvier
B. Dendritic spines
C. NMJ
D. synaptic vesicles
E. symmetric synapses
B. dendritic spines
The human central nervous system is generated from which of the following?
, A. the neural tube
B. The neural ring
C. The neural triangle
D. The neural crest
E. The neural duct
A. The neural tube
6. The Nernst equilibrium potential of Cl is dependent on which of the following?
A. Intracellular [Ca]
B. Intracellular [Na]
C. Intracellular [K]
D. Temperature
E. None of the above
D. Temperature
7. Which of the following happens in hyperkalemia?
A. E(k) is decreased
B. E(k) is increased
C. E(k) does not change
D. E(na) is increased
E. E(na) is decreased
A. E(k) is increased
At the rest membrane potential of a typical neuron, which is true?
A. There is no net movement of Na
B. Na has a strong driving force to enter the neuron
C. Na has a strong driving force to exit the neuron
D. There is no net movement of K
E. There is no net movement of Cl
B. Na has a strong driving force to enter the neuron
What causes the semitendinosis to relax in the stretch reflex in response to a tendon
tap?
A. The interneuron in the spinal cord activates the semitendinosis
B. Acetylcholine is not released on the semitendinosis
C. GABA is released on the semitendinosis
D. Glutamate is released on the semitendinosis
