What are the two subtypes of norepinephrine receptors? (Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected
1. Beta
2. Delta
3. Epsilon
4. Alpha
5. Pi
Correct Answer: 1, 4
Rationale 1: Beta is a subtype of norepinephrine receptor.
Rationale 2: Delta is not a subtype of norepinephrine receptor.
Rationale 3: Epsilon is not a subtype of norepinephrine receptor.
Rationale 4: Alpha is a subtype of norepinephrine receptor.
Rationale 5: Pi is not a subtype of norepinephrine receptor.
Global Rationale: Alpha and beta are subtypes of norepinephrine receptors. Delta, epsilon, and pi are not subtypes of norepinephrine receptors.
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