Open Question
Complete this concept map to summarize the key concepts concerning the body's defenses.
41. Immune System
Immune System
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Phagocytosis is best defined as __________.
A
the process by which a cell engulfs and takes up a liquid
B
the secretion of antimicrobial peptides
C
the fusion of an intracellular vesicle with the plasma membrane of a cell
D
the process of activating memory T cells
E
the cellular ingestion of foreign substances
Verified step by step guidance1
Understand the term 'phagocytosis': Phagocytosis is a type of endocytosis where a cell engulfs large particles or cells, often to destroy them or to obtain nutrients.
Identify the key components of phagocytosis: It involves the engulfing of solid particles, not liquids, and is a mechanism used by certain cells, like macrophages, to ingest foreign substances.
Differentiate phagocytosis from other cellular processes: Unlike pinocytosis, which involves the uptake of liquids, phagocytosis is specifically for solid particles. It is not related to secretion or vesicle fusion.
Consider the role of phagocytosis in the immune system: Phagocytosis is crucial for the immune response, as it helps eliminate pathogens and debris from the body.
Select the correct definition: Based on the understanding of phagocytosis, the correct definition is 'the cellular ingestion of foreign substances,' as it accurately describes the process.
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