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Questions and Answers
What is the primary function of white blood cells in combating infectious and toxic agents?
What is the primary function of white blood cells in combating infectious and toxic agents?
- Destroying invading bacteria or viruses by phagocytosis (correct)
- Stimulating the production of cortisol to combat diseases
- Secreting insulin to fight off infections
- Producing red blood cells for immunity
Where are white blood cells formed in the body?
Where are white blood cells formed in the body?
- Entirely in the lymph tissue
- Partially in the liver and partially in the spleen
- Partially in the bone marrow and partially in the lymph tissue (correct)
- Entirely in the bone marrow
What is the role of antibodies and sensitized lymphocytes produced by white blood cells?
What is the role of antibodies and sensitized lymphocytes produced by white blood cells?
- Destroying or inactivating the invading bacteria or viruses (correct)
- Stimulating the production of mucus to trap pathogens
- Forming a protective barrier around affected tissues
- Causing inflammation at the site of infection
What is the main function of tissue cells derived from leukocytes in preventing disease?
What is the main function of tissue cells derived from leukocytes in preventing disease?
Which type of white blood cell is responsible for ingesting invading organisms through phagocytosis?
Which type of white blood cell is responsible for ingesting invading organisms through phagocytosis?
What is the normal percentage of monocytes in the total white blood cell count?
What is the normal percentage of monocytes in the total white blood cell count?
Where are lymphocytes and plasma cells mainly produced?
Where are lymphocytes and plasma cells mainly produced?
What is the life span of lymphocytes in the body?
What is the life span of lymphocytes in the body?
Which enzyme in tears destroys certain bacteria in the eyes?
Which enzyme in tears destroys certain bacteria in the eyes?
What is the combined effect of pepsin and HCl in gastric juice?
What is the combined effect of pepsin and HCl in gastric juice?
What do lymphocytes and fibroblasts produce in response to viruses or tumor cells?
What do lymphocytes and fibroblasts produce in response to viruses or tumor cells?
What is the role of interferon released from virus-infected cells?
What is the role of interferon released from virus-infected cells?
Which enzyme catalyzes the reaction between H2O2 and chloride ions to form hypochlorite?
Which enzyme catalyzes the reaction between H2O2 and chloride ions to form hypochlorite?
What is the substance released by mast cells and basophils that can prevent blood coagulation?
What is the substance released by mast cells and basophils that can prevent blood coagulation?
Which type of leukemia begins by cancerous production of young myelogenous cells in the bone marrow?
Which type of leukemia begins by cancerous production of young myelogenous cells in the bone marrow?
What is the function of mechanical barriers in innate immunity?
What is the function of mechanical barriers in innate immunity?
What is the main function of neutrophils and tissue macrophages?
What is the main function of neutrophils and tissue macrophages?
What is the process through which white blood cells enter the tissue spaces?
What is the process through which white blood cells enter the tissue spaces?
What is the phenomenon known as when chemical substances in the tissues cause both neutrophils and macrophages to move toward the source of the chemical?
What is the phenomenon known as when chemical substances in the tissues cause both neutrophils and macrophages to move toward the source of the chemical?
What happens once a foreign particle has been phagocytized by neutrophils or macrophages?
What happens once a foreign particle has been phagocytized by neutrophils or macrophages?
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