Podcast
Questions and Answers
What is the primary mechanism by which histamine is released from mast cells?
What is the primary mechanism by which histamine is released from mast cells?
- Adrenergic receptor activation
- Calcium-channel blockers
- Phospholipase C mechanism (correct)
- Phospholipase A mechanism
What is the primary effect of histamine on blood vessels?
What is the primary effect of histamine on blood vessels?
- Vasodilation (correct)
- Vasoconstriction
- Decreased blood flow
- Increased blood pressure
Which of the following is a treatment option for preventing histamine release?
Which of the following is a treatment option for preventing histamine release?
- Antihistamines
- Mast cell stabilisers (correct)
- Corticosteroids
- α-adrenoceptor agonists
What is the primary effect of histamine on nerves?
What is the primary effect of histamine on nerves?
What is the primary mechanism by which α-adrenoceptor agonists work to counteract the effects of histamine?
What is the primary mechanism by which α-adrenoceptor agonists work to counteract the effects of histamine?
What is the primary reason for the rapid metabolism of histamine?
What is the primary reason for the rapid metabolism of histamine?
What is the primary mechanism of histamine release from mast cells?
What is the primary mechanism of histamine release from mast cells?
What is the result of histamine's cellular effects on the nasal passages in allergic rhinitis?
What is the result of histamine's cellular effects on the nasal passages in allergic rhinitis?
What are the two primary enzymes involved in histamine metabolism?
What are the two primary enzymes involved in histamine metabolism?
What is the name of the autocoid that is rapidly metabolized to ensure local action?
What is the name of the autocoid that is rapidly metabolized to ensure local action?
What is the primary purpose of histamine release in allergic reactions?
What is the primary purpose of histamine release in allergic reactions?
What is the role of α adrenoreceptor agonists in counteracting histamine-induced effects?
What is the role of α adrenoreceptor agonists in counteracting histamine-induced effects?
What is the primary mechanism by which histamine is released during an allergic response?
What is the primary mechanism by which histamine is released during an allergic response?
What is the primary effect of histamine on blood vessels?
What is the primary effect of histamine on blood vessels?
What is the purpose of leukotriene receptor antagonists in treating allergic rhinitis?
What is the purpose of leukotriene receptor antagonists in treating allergic rhinitis?
What is the primary role of histamine in the allergic response?
What is the primary role of histamine in the allergic response?
