What role do receptors play in pharmacodynamics?
Medications must bind with receptors to mimic or block the actions of the body's own regulatory molecules.
Activation of the receptor by the medication will cause the cell to develop a new function.
Receptors are necessary to start the process of metabolism of the medication by the liver.
Binding of a medication to a receptor will allow the medication to become more selective to that type of receptor.
The Correct Answer is A
In pharmacodynamics, receptors play a crucial role in mediating the effects of medications ¹. Medications must bind with receptors to mimic or block the actions of the body's own regulatory molecules ¹. This binding can activate or inhibit the receptor, leading to a biological response ¹.
Option B is incorrect because activation of the receptor by the medication does not necessarily cause the cell to develop a new function.
Option C is incorrect because receptors do not start the process of metabolism of the medication by the liver.
Option D is incorrect because binding a medication to a receptor does not necessarily make the medication more selective to that type of receptor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Carbidopa/levodopa is a medication used to treat the symptoms of Parkinson's disease, including tremors, stiffness, and difficulty with movement. If the medication is effective, the client should show improvement in their ability to move and perform daily activities. In this case, the client being able to walk upright without stumbling indicates that the medication is effective.
Option B is incorrect because eating 30% to 40% of meals within 1 hour is not related to the effectiveness of carbidopa/levodopa.
Option C is incorrect because displaying emotions when discussing the illness is not related to the effectiveness of carbidopa/levodopa.
Option D is incorrect because cogwheel motion when swinging the arms is a symptom of Parkinson's disease and would indicate that the medication is not effective.
Correct Answer is A
Explanation
Teratogenic refers to an agent or factor that causes malformation of an embryo ¹. It is something that can interfere with normal fetal development and cause congenital disabilities ³. Drugs, alcohol, chemicals, and toxic substances are examples of teratogens ³.
Option B is not correct because teratogenic specifically refers to harm caused to a fetus, not kidney damage.
Option C is not correct because teratogenic does not refer to a medication acting in the opposite manner than expected.
Option D is not correct because teratogenic does not refer to a medication causing an additive effect.
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