Tag: our body- its internal organ system
Questions Related to our body- its internal organ system
The different types of the blood vessels seen in the body are
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Three
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Two
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Four
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Five
Which is the correct sequence of arrangement of types of WBC in decreasing order in terms of number per ${mm}^{3}$ of human blood?
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Eosinophils --> Basophils --> Neutrophils
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Basophils --> Eosinophils --> Neutrophils
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Neutrophils --> Eosinophils --> Basophils
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Eosinophils --> Neutrophils --> Basophils
Percentage distribution of leukocyte are as follows:
Which blood cells of mammals are concerned with immunity?
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Young Erythrocytes
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Leucocytes
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Thrombocytes
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Matured Erythrocytes
Leucocytes or the white blood cells are concerned with immunity. They perform phagocytosis, antigen-presenting, the release of antibodies, release of cytokines, opsonization etc. to keep the immunity of the body against the pathogens. Erythrocytes or the red blood cells are responsible for the transportation of oxygen. Thrombocytes or the platelets are responsible for blood clotting.
WBC is called as true cell because of
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Presence of nucleus
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Phagocytosis
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Polymorphism
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None of the above
The components of blood consists of red blood cells, white blood cells and platelets. Of these, only white blood cells are true cells or complete cells as they have a nucleus, organelles and other cell structures and processes such as expressing proteins.
Thus, the correct answer is option (A).
Diapedesis means.
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Movement of the food in gut
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Formation of W.B.C.
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The process by which leucocytes squeeze through thin capillary wall
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Formation of R.B.C.
Increase in number of leukocytes beyond normal indicates
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Anaemia
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Infection
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Increased defence against pathogen
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Non-formation of RBC.
A high white blood cell(leukocyte) count isn't a specific disease, but it can indicate another problem, such as infection, stress, inflammation, trauma, allergy, or certain diseases. That's why a high white blood cell count usually requires further investigation.
Number of leucocytes present in one $mm^3$ of blood is
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5000-8000
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2000-3000
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8000-13000
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1 million to 1.5 million
Which is correct about leucocytes?
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They are red coloured.
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They can cross capillaries.
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They are enucleate.
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Decrease in their number causes leukemia.
Which one produces antibodies?
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Macrophages
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Plasma cells/Lymphocytes
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Mast cells
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Fibroblasts.
Which one are granulocytes?
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Neutrophils, basophils, lymphocytes
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Eosinophils, basophils, monocytes
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Basophils, monocytes, lymphocytes
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Neutrophils, eosinophils, basophils
- Eosinophils: These cells play important role in immunity and allergic reactions. These make about 1 - 5% of total leucocytes.
- Basophils: These cells contain heparin, serotonin and histamine. These make about 0.5 - 2.7% of total leucocytes.
- Neutrophils: These cells perform phagocytosis and also destroy bacteria. These make about 60 - 70% of total leucocytes.
- Lymphocytes: These cells are of two types, B lymphocytes that maintain humoral immunity and T lymphocytes which maintain cell mediated immunity. These make about 20 - 40% of total leucocytes.
- Monocytes: These cells are actively motile and phagocytic cells. These make about 2 - 7% of total leucocytes.