Question

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

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

Answer 1

The correct option is D 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.

Final answer

b) Blood capillaries become highly permeable leading to loss of fluids from the blood