NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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migrations of white blood cells from the blood out to the tissue.
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loss of blood due to hemorrhaging.
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production of only red blood cells.
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productions of white blood cells, red blood cells and platelets.
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Detailed explanation-1: -Leukocyte extravasation (also commonly known as leukocyte adhesion cascade or diapedesis – the passage of cells through the intact vessel wall) is the movement of leukocytes out of the circulatory system and towards the site of tissue damage or infection.
Detailed explanation-2: -The innate immune response involves the extravasation of leukocytes from blood vessels to sites of tissue damage, infection, or inflammation, a process known as diapedesis (1–3). This complex process is regulated spatiotemporally by many receptor molecules in both leukocytes and vascular endothelial cells (VECs).
Detailed explanation-3: -TEM, or diapedesis, is the process whereby the leukocyte squeezes in ameboid fashion across the endothelial cells. This almost always happens at endothelial cell borders101, 117 (a small fraction of transmigration occurs through the endothelial cell body; this will be discussed later).
Detailed explanation-4: -Diapedesis is the movement of white blood cells through intact blood vessel walls into surrounding body tissue. It typically happens when an area of the body is injured or damaged, and an inflammation response is required.