> See also: > - Reference # Phagocytosis **Phagocytosis** is the process of a larger cell engulfing and dissolving a smaller cell. During the process, extracellular particles are engulfed by *pseudopodia* formed by the extension of the cell membrane which surround the particle to form an internal **phagosome** Phagosome merges with **lysosomes** to form **phagolysosomes** **Autophagy**, or autophagocytosis, is the conserved degredation of the cell that removes unnecessary or dysfunctional componenets through a lysosome-dependent regulated mechanism. - This process can also “recognize” and destroy intracellular pathgoens. - A necessary process, but can cause uncontrolled growth or death is dysregulated ![[Pasted image 20231124224726.png|400]] ## Receptor Mediated Endocytosis ## Macropinocytosis Macropinocytosis differs from receptor mediated endocytosis as it is ## Phagocytic Cells **Professional Phagocytic Cells:** Macrophages, Monocytes, Neutrophils, Dendritic Cells