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NBME 23 Answers

nbme23/Block 4/Question#27

A man accidentally touches the surface of a hot ...

Histamine

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submitted by temmy(26),

Dr Sattar talks about increase capillary permeability in the postcapillary venules and vasodilation in the arterioles as actions of histamine. That was what i thought of when i answered the questions.





Mast cell degranulation can be triggered by foreign antigens and trauma

thepromise  I believe what you're speaking about occurs more during hypersensitivity reaction. In this case, there is damage to the endothelial cells, which they also release histamine for vasodilation. which creates permeability for the neutrophills and erythema from the increased blood volume. +6