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Questions and Answers
What is histamine formed from?
What is histamine formed from?
- The amino acid histidine (correct)
- The amino acid tryptophan
- The amino acid tyrosine
- The amino acid glycine
What enzymes metabolize histamine in the body?
What enzymes metabolize histamine in the body?
- Acetylcholine esterase and laminin
- Trypsin and chymotrypsin
- Histidine decarboxylase and peptidase
- Monoamine oxidase and diamine oxidase (correct)
What is the major metabolite of histamine that can be measured in the urine?
What is the major metabolite of histamine that can be measured in the urine?
- Diamine oxidase
- Histamine itself
- Imidazole acetic acid (correct)
- Monoamine oxidase
What is the role of histamine in the stomach?
What is the role of histamine in the stomach?
What is histamine released from in response to IgE-mediated allergic reactions?
What is histamine released from in response to IgE-mediated allergic reactions?
What is the primary mechanism by which the Lewis triple response is mediated?
What is the primary mechanism by which the Lewis triple response is mediated?
What is the characteristic feature of the center of an intradermal injection of histamine?
What is the characteristic feature of the center of an intradermal injection of histamine?
What is the order of the characteristics of the Lewis triple response?
What is the order of the characteristics of the Lewis triple response?
How many receptors for histamine have been identified?
How many receptors for histamine have been identified?
What is the term for the characteristic response to an intradermal injection of histamine?
What is the term for the characteristic response to an intradermal injection of histamine?
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