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Questions and Answers
What is the main effect of M3 receptor activation on blood vessels?
What is the main effect of M3 receptor activation on blood vessels?
- Vasoconstriction
- Increase in blood pressure
- Increase in heart rate
- Vasodilation (correct)
Which receptor mediates the decrease in heart rate and force of cardiac contraction induced by acetylcholine?
Which receptor mediates the decrease in heart rate and force of cardiac contraction induced by acetylcholine?
- Nicotinic
- M2 (correct)
- M1
- M3
What effect does atropine have on the actions of acetylcholine at muscarinic receptors in the heart?
What effect does atropine have on the actions of acetylcholine at muscarinic receptors in the heart?
- Causes vasodilation
- Increases heart rate (correct)
- Reduces blood pressure
- Induces coronary artery spasm
Which type of receptors are affected by atropine administration?
Which type of receptors are affected by atropine administration?
What is the main effect of injecting acetylcholine into the coronary artery?
What is the main effect of injecting acetylcholine into the coronary artery?
Which of the following is a therapeutic use of acetylcholine in ophthalmic surgery?
Which of the following is a therapeutic use of acetylcholine in ophthalmic surgery?
Which receptor is primarily responsible for the vasodilation effect of low-dose epinephrine?
Which receptor is primarily responsible for the vasodilation effect of low-dose epinephrine?
What is the primary effect of high-dose epinephrine on blood pressure?
What is the primary effect of high-dose epinephrine on blood pressure?
Which receptor is primarily responsible for the reflex decrease in heart rate seen with high-dose epinephrine?
Which receptor is primarily responsible for the reflex decrease in heart rate seen with high-dose epinephrine?
Which receptor is primarily responsible for the relaxation of bronchial muscles seen with epinephrine?
Which receptor is primarily responsible for the relaxation of bronchial muscles seen with epinephrine?
Which clinical condition is NOT a typical use for epinephrine?
Which clinical condition is NOT a typical use for epinephrine?
Which adverse effect is NOT typically associated with epinephrine use?
Which adverse effect is NOT typically associated with epinephrine use?
What is the primary effect of Norepinephrine on blood vessels?
What is the primary effect of Norepinephrine on blood vessels?
What is the effect of Propranolol on coronary blood flow?
What is the effect of Propranolol on coronary blood flow?
Which neurotransmitter is released by the Parasympathetic Nervous System?
Which neurotransmitter is released by the Parasympathetic Nervous System?
Which type of receptors are primarily found on the heart?
Which type of receptors are primarily found on the heart?
What is the effect of Norepinephrine on blood pressure?
What is the effect of Norepinephrine on blood pressure?
What is the therapeutic use of Propranolol?
What is the therapeutic use of Propranolol?
What is the effect of Propranolol on the secretion of renin?
What is the effect of Propranolol on the secretion of renin?
Which part of the heart is innervated by the Parasympathetic Nervous System?
Which part of the heart is innervated by the Parasympathetic Nervous System?
What is the effect of Norepinephrine on the stroke volume?
What is the effect of Norepinephrine on the stroke volume?
What is the effect of Propranolol on the heart rate at rest?
What is the effect of Propranolol on the heart rate at rest?
Which of the following neurotransmitters is released from postganglionic sympathetic fibers?
Which of the following neurotransmitters is released from postganglionic sympathetic fibers?
What is the main function of the parasympathetic nervous system in controlling heart rate and blood pressure?
What is the main function of the parasympathetic nervous system in controlling heart rate and blood pressure?
Which receptor subtype is mainly found on the heart, kidneys, and salivary glands?
Which receptor subtype is mainly found on the heart, kidneys, and salivary glands?
What is the effect of epinephrine on blood vessels?
What is the effect of epinephrine on blood vessels?
Which of the following is NOT a function of the autonomic nervous system?
Which of the following is NOT a function of the autonomic nervous system?
What is the primary target of the sympathetic nervous system in the 'fight, fright or flight' response?
What is the primary target of the sympathetic nervous system in the 'fight, fright or flight' response?
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