Question

A person may die due to an allergic reaction or an anaphylactic shock which is characterised by

• A. constriction of peripheral blood vessels
• B. All of the above
• C. blood capillaries become highly permeable leading to loss of fluids from the blood
• D. drastic increase in blood pressure

Answer 1

The correct option is C blood capillaries become highly permeable leading to loss of fluids from the blood

Capillary dilation
Capillary dilation is a mechanism to increase blood flow to areas of the body that lacks oxygen or nutrients.
The dilated blood capillaries become highly permeable to fluids, leading to the loss of fluids from the blood. This normally happens in anaphylaxis.