QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Select the true statements about dopamine.
A. Dopamine cannot cross the blood-brain barrier.
B. Dopamine is an ester.
C. L-dopa can cross the blood-brain barrier.
D. Dopamine deficiency causes a degenerative neural disorder.
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Answer
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Step 1:I'll solve this problem step by step, analyzing each statement about dopamine carefully.
Step 2:: Understand Dopamine's Chemical Properties
Dopamine is a neurotransmitter and a catecholamine. Let's evaluate each statement systematically:
Step 3:: Evaluate Statement A - "Dopamine cannot cross the blood-brain barrier"
- Dopamine is a polar molecule with a molecular weight that prevents it from easily crossing the blood-brain barrier - This statement is TRUE - The blood-brain barrier is highly selective, and dopamine's chemical structure prevents direct passage
Final Answer
The true statements are A, C, and D.
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