OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is not true of histamine?
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it makes blood vessels leakier
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it allows immune system cells to travel to damaged tissue faster
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large amounts can cause anaphylactic shock in some people
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it constricts blood vessels
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Explanation:
Detailed explanation-1: -Answer and Explanation: The correct option is b. Histamine is present in almost all tissues of the human body. It is mainly stored in the granules of mast cells.
Detailed explanation-2: -Histamine causes constriction of various smooth muscles with the bronchioles being most sensitive to its effects. It also commonly produces vasodilation as a result of effects on vascular smooth muscle. Histamine also has multiple effects on the heart and nervous systems.
There is 1 question to complete.