Leukocytes Quiz: Test Your Knowledge of White Blood Cells

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Questions and Answers

What is the main function of leukocytes in the body?

To produce hormones

To regulate body temperature

To defend against foreign invaders (correct)

To transport oxygen to tissues

Which type of cells do leukocytes develop from?

Platelets

White blood cells

Stem cells (correct)

Red blood cells

What are the three main types of hematopoietic cells?

Neurons, glial cells, and astrocytes

Stem cells, progenitor cells, and precursor cells (correct)

T cells, B cells, and natural killer cells

Red blood cells, white blood cells, and platelets

Which type of leukocyte is associated with allergic reactions and parasite infection?

Eosinophils Signup and view all the answers

What is the nucleus structure of neutrophils?

Segmented with two to four lobes Signup and view all the answers

What is the function of monocytes in the body?

To function as phagocytes Signup and view all the answers

Which type of leukocyte constitutes less than 1% of total leukocytes?

Basophils Signup and view all the answers

What is the difference between T and B lymphocytes?

T lymphocytes are responsible for cell-mediated immunity, while B lymphocytes are responsible for humoral immunity Signup and view all the answers

What is the function of eosinophils in the body?

To be involved in allergic reactions and parasite infection Signup and view all the answers

What is the difference between myeloblasts and neutrophils?

Myeloblasts differentiate into promyelocytes, myelocytes, metamyelocytes, and finally, neutrophils Signup and view all the answers

What is the percentage of neutrophils in circulatory leukocytes?

40-60% Signup and view all the answers

What is the function of basophils in the body?

To release histamine and heparin Signup and view all the answers

What is the main function of leukocytes in the body?

To defend against foreign invaders Signup and view all the answers

What are the three main types of hematopoietic cells?

Stem cells, progenitor cells, and precursor cells Signup and view all the answers

Which leukocyte constitutes the largest percentage of circulatory leukocytes?

Neutrophils Signup and view all the answers

What is the function of eosinophils?

To combat allergic reactions and parasite infections Signup and view all the answers

Which leukocyte has a bilobed nucleus and large purple-black granules containing histamine and heparin?

Basophils Signup and view all the answers

What is the function of monocytes?

To phagocytose microorganisms Signup and view all the answers

What are the two types of lymphocytes?

T and B lymphocytes Signup and view all the answers

From what do leukocytes develop?

Pluripotential stem cells in the bone marrow Signup and view all the answers

What do hematopoietic growth factors do?

Influence stem cells to mature into terminally differentiated cells Signup and view all the answers

What is the order of myeloblast differentiation?

Promyelocytes, myelocytes, metamyelocytes, and finally, neutrophils Signup and view all the answers

What attracts leukocytes to sites of inflammation, infection, or tissue injury?

Chemoattractants Signup and view all the answers

What is the function of progenitor cells?

To differentiate into terminally differentiated cells Signup and view all the answers

Study Notes

Overview of Leukocytes and their Types

Leukocytes develop from pluripotential stem cells in the bone marrow.
Hematopoietic growth factors influence stem cells to mature into terminally differentiated cells.
Leukocytes circulate for only a few hours in the peripheral blood before migrating to tissues.
Leukocytes defend the body against foreign invaders and are attracted to sites of inflammation, infection, or tissue injury by chemoattractants.
There are three main types of hematopoietic cells: stem cells, progenitor cells, and precursor cells.
Myeloblasts differentiate into promyelocytes, myelocytes, metamyelocytes, and finally, neutrophils.
The five types of human leukocytes are neutrophils, lymphocytes, monocytes, eosinophils, and basophils.
Neutrophils constitute 40-60% of circulatory leukocytes and have a segmented nucleus with two to four lobes.
Eosinophils spend very little time in peripheral blood before migrating to tissues and are associated with allergic reactions, parasite infection, and chronic inflammation.
Basophils constitute less than 1% of total leukocytes, have a bilobed nucleus, and large purple-black granules containing histamine and heparin.
Monocytes are the largest cells in peripheral blood and function as phagocytes, ingesting and killing microorganisms.
Lymphocytes are classified as T and B lymphocytes and are responsible for cell-mediated and humoral immunity, respectively.

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Description

Test your knowledge of leukocytes with this informative quiz! From stem cells to the five types of human leukocytes, this quiz covers it all. See if you can identify the different types and understand their roles in defending the body against foreign invaders. With questions about differentiation, circulation, and function, this quiz is perfect for students or anyone interested in the fascinating world of leukocytes.