White Blood Cells and Their Functions
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Questions and Answers

The normal white blood cell count range is from 8000 to 12000 µl.

False (B)

Leukocytosis can result from conditions such as infections and inflammatory diseases.

True (A)

White blood cells are less numerous than red blood cells in the body.

True (A)

Leukopenia refers to an increased number of white blood cells.

<p>False (B)</p> Signup and view all the answers

Pregnancy in the final month is associated with decreased WBC levels.

<p>False (B)</p> Signup and view all the answers

Manual counting of white blood cells is the only method used for determining WBC counts.

<p>False (B)</p> Signup and view all the answers

Leukemia is a non-malignant condition affecting the bone marrow.

<p>False (B)</p> Signup and view all the answers

A mild increase in white blood cells can occur after food intake and returns to normal within an hour.

<p>True (A)</p> Signup and view all the answers

Neutrophils account for 40-50% of the total white blood cell count.

<p>False (B)</p> Signup and view all the answers

Basophils are the most numerous type of white blood cell.

<p>False (B)</p> Signup and view all the answers

Eosinophils have a role in protecting against infections caused by parasitic worms.

<p>True (A)</p> Signup and view all the answers

Monocytes are the smallest type of white blood cells.

<p>False (B)</p> Signup and view all the answers

On the day of birth, a newborn has a white blood cell count that typically ranges from 9,000 to 30,000 leukocytes.

<p>True (A)</p> Signup and view all the answers

Lymphocytes are predominant in the blood until about 8 years of age.

<p>True (A)</p> Signup and view all the answers

All types of white blood cells possess granules in their cytoplasm.

<p>False (B)</p> Signup and view all the answers

Lymphocytosis refers to an increased number of neutrophils in the blood.

<p>False (B)</p> Signup and view all the answers

Flashcards

WBC Count

Measurement of white blood cells per unit volume of blood.

Normal WBC range

Typically 5000-11000 cells/µL, varies by age.

Leukocytosis

Elevated white blood cell count, often due to infection or inflammation.

Leukemia

Cancer of blood-forming cells, causing elevated WBC.

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Leukopenia

Low white blood cell count, indicating possible illness or treatment.

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WBC Count Methods

Manual or electronic counting methods used to find WBC count.

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Physiological Leukocytosis

Elevated WBC count due to normal body processes like exercise or eating.

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Infection (WBC)

A common cause of a high white blood cell count.

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Granulocytes

White blood cells with granules in their cytoplasm.

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Neutrophils

Most common WBCs, involved in phagocytosis.

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Eosinophils

WBCs involved in allergic reactions and parasitic infections.

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Basophils

Rare WBCs releasing histamine and heparin for inflammation.

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Agranulocytes

WBCs without granules in their cytoplasm

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Lymphocytes

WBCs crucial for immune response, including T & B cells.

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Monocytes

Large WBCs with phagocytic activity.

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WBC count Newborn

Higher than adult, then decreases

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