OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC AND IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Leukopenia
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Hematopoiesis
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Erythropenia
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Thrombopoiesis
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Detailed explanation-1: -Leukopenia (low white blood cell count) happens when you have a lower-than-normal number of white blood cells. Specifically, you have fewer neutrophils than normal. Neutrophils are white blood cells that act as your immune system’s first line of defense.
Detailed explanation-2: -What Is Leukopenia? Leukopenia is a condition where the body doesn’t have enough disease-fighting leukocytes in the blood. It is associated with a low white blood cell count. White blood cells are produced by the bone marrow.
Detailed explanation-3: -A person has leukopenia when the total WBC count is less than 3.0 x 109/L. A person has neutropenia when the ANC is less than 1.9 x 109/L. The neutrophil count usually decreases with the WBC count, but it is possible to have a normal WBC count and still have neutropenia.
Detailed explanation-4: -A higher than normal WBC count is called leukocytosis.
Detailed explanation-5: -Common causes of leukopenia include: Medications, especially immunosuppressants and cancer therapies. Bone marrow disorders, including bone marrow cancer. Infections that consume or attack white blood cells, such as human immunodeficiency virus (HIV) or AIDS.