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Which of the following cell types of the innate immune system does not perform phagocytosis?
- a)Neutrophils
- b)Basophils
- c)Macrophages
- d)Eosinophils
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following cell types of the innate immune system does not...
Explanation: Basophils are a type of white blood cell that are involved in the allergic response and the defense against parasites. While they play a role in the immune system, basophils are not primarily responsible for phagocytosis. Instead, they release chemical mediators such as histamine and heparin to promote inflammation and allergic reactions. Neutrophils, macrophages, and eosinophils, on the other hand, are all phagocytic cells involved in engulfing and eliminating pathogens and cellular debris.
Most Upvoted Answer
Which of the following cell types of the innate immune system does not...
Overview of Innate Immune Cell Types
The innate immune system is the body's first line of defense against pathogens. It includes various cell types that perform different functions, notably phagocytosis, which is the process of engulfing and digesting harmful entities like bacteria and dead cells.
Cell Types Discussed
- Neutrophils:
- These are the most abundant white blood cells in the immune system.
- They are highly effective at phagocytosing bacteria and fungi, serving as the first responders to sites of infection.
- Macrophages:
- Derived from monocytes, macrophages are large phagocytic cells.
- They play a crucial role in engulfing pathogens, dead cells, and debris, and also help activate other immune cells.
- Eosinophils:
- These cells are primarily involved in combating multicellular parasites and certain infections.
- They can also perform phagocytosis, although it's not their primary function.
- Basophils:
- Basophils are the least common type of granulocytes and do not perform phagocytosis.
- They primarily release histamines and other mediators during allergic reactions and inflammatory responses, aiding in vasodilation and increasing blood flow to affected tissues.
Conclusion
In summary, basophils (option B) are the correct answer as they do not engage in phagocytosis. Instead, they release substances that play a role in allergic reactions and inflammation, differentiating them from neutrophils, macrophages, and eosinophils, which are all capable of phagocytosis.
The innate immune system is the body's first line of defense against pathogens. It includes various cell types that perform different functions, notably phagocytosis, which is the process of engulfing and digesting harmful entities like bacteria and dead cells.
Cell Types Discussed
- Neutrophils:
- These are the most abundant white blood cells in the immune system.
- They are highly effective at phagocytosing bacteria and fungi, serving as the first responders to sites of infection.
- Macrophages:
- Derived from monocytes, macrophages are large phagocytic cells.
- They play a crucial role in engulfing pathogens, dead cells, and debris, and also help activate other immune cells.
- Eosinophils:
- These cells are primarily involved in combating multicellular parasites and certain infections.
- They can also perform phagocytosis, although it's not their primary function.
- Basophils:
- Basophils are the least common type of granulocytes and do not perform phagocytosis.
- They primarily release histamines and other mediators during allergic reactions and inflammatory responses, aiding in vasodilation and increasing blood flow to affected tissues.
Conclusion
In summary, basophils (option B) are the correct answer as they do not engage in phagocytosis. Instead, they release substances that play a role in allergic reactions and inflammation, differentiating them from neutrophils, macrophages, and eosinophils, which are all capable of phagocytosis.
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Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer?.
Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following cell types of the innate immune system does not perform phagocytosis?a)Neutrophilsb)Basophilsc)Macrophagesd)EosinophilsCorrect answer is option 'B'. Can you explain this answer?.
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