Neuropharmacology of the PNS Exam Questions and Answers | 100% correct
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Neuropharmacology of the PNS
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Neuropharmacology Of The PNS
Neuropharmacology of the PNS Exam Questions and Answers | 100% correct Neuropharmacology of the PNS Exam Questions and Answers | 100% correct
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1. What is the primary therapeutic application of Methyldopa, and what makes it a preferred choice for managi...
neuropharmacology of the pns exam questions and an
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Neuropharmacology of the PNS
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Neuropharmacology of the PNS Exam Questions and Answers |
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1. What is the primary therapeutic application of Methyldopa, and what makes it a preferred
choice for managing hypertension in pregnant patients?
A) Reduces heart rate; safe during pregnancy
B) Lowers blood pressure; safe during pregnancy
C) Increases blood volume; preferred for renal patients
D) Enhances diuresis; causes fewer side effects
Answer: B) Lowers blood pressure; safe during pregnancy
2. Clonidine lowers blood pressure because:
A) It causes vasodilation
B) It decreases heart rate
C) It acts centrally to inhibit sympathetic outflow
D) It enhances renin release
Answer: C) It acts centrally to inhibit sympathetic outflow
3. What is the primary mechanism by which beta-1 blockers help manage dysrhythmias?
A) Increase heart contractility
B) Decrease heart rate and conduction velocity
C) Promote vasodilation
D) Enhance adrenergic receptor sensitivity
Answer: B) Decrease heart rate and conduction velocity
4. What class of medication is Prazosin and what is one of its main therapeutic uses?
A) Alpha-1 antagonist; hypertension
B) Beta blocker; heart failure
C) ACE inhibitor; renal protection
D) Calcium channel blocker; angina
,Answer: A) Alpha-1 antagonist; hypertension
5. Most common adverse effect of beta blocker in the heart...
A) Tachycardia
B) Bradycardia
C) Hypertension
D) Arrhythmias
Answer: B) Bradycardia
6. Dobutamine acts on the following receptors:
A) Alpha-1
B) Beta-1
C) Beta-2
D) Muscarinic
Answer: B) Beta-1
7. The sympathetic nervous system's primary effect on cardiac output is primarily?
A) Vasodilation
B) Increased heart rate and contractility
C) Decreased stroke volume
D) Increased diastolic pressure
Answer: B) Increased heart rate and contractility
8. How do adrenergic drugs primarily influence the cardiovascular system during a fight-or-flight
response?
A) Increase heart rate and contractility
B) Decrease peripheral resistance
C) Lower blood glucose levels
D) Promote diuresis
Answer: A) Increase heart rate and contractility
9. Which statement accurately describes the roles of presynaptic and postsynaptic neurons in
neurotransmission?
, A) Presynaptic neurons release neurotransmitters; postsynaptic neurons receive them.
B) Both presynaptic and postsynaptic neurons release neurotransmitters.
C) Presynaptic neurons only receive signals.
D) Postsynaptic neurons only release signals.
Answer: A) Presynaptic neurons release neurotransmitters; postsynaptic neurons receive them.
10. What is the role of the sympathetic nervous system in emotional situations?
A) Decreases heart rate
B) Enhances emotional stability
C) Prepares the body for action
D) Promotes relaxation
Answer: C) Prepares the body for action
11. How do alpha 2 antagonists affect neurotransmitter release in the peripheral nervous system?
A) Increase neurotransmitter release
B) Decrease neurotransmitter release
C) Have no effect
D) Inhibit receptor binding
Answer: A) Increase neurotransmitter release
12. What is the primary function of neurotransmitters in the peripheral nervous system?
A) Provide energy to neurons
B) Facilitate communication between neurons
C) Regulate blood flow
D) Control muscle contraction
Answer: B) Facilitate communication between neurons
13. Key steps involved in neurotransmission:
A) Synthesis, release, binding, reuptake
B) Production, storage, absorption, degradation
C) Activation, inhibition, elimination, regeneration
D) Binding, transport, amplification, elimination
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