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Which of the following statement(s) is/are true concerning the cell function of phagocytosis?



A. Phagocytosis is a mechanistically distinct process of endocytosis performed by special cells to take up larger particles such as bacteria or erythrocytes
B. Lymphocytes are the primary blood cell involved with this process
C. The process involves a coating of the cytoplasmic surface known as clathrin
D. Phagocytosis is performed only by white blood cells and tissue macrophages

This question is part of basic surgery (100q).1

Asked by Lucas, Last updated: Sep 15, 2020

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John Smith

John Smith

John Smith
John Smith

Answered Sep 09, 2016

Phagocytosis is a mechanistically distinct process of endocytosis performed by special cells to take up larger particles such as bacteria or erythrocytes-phagocytosis is a specialized form of endocytosis by which large particles are internalized by specialized cells primarily macrophages and neutrophils. to be phagocytosed, particles must bind to the surface of the phagocytic cell, usually as the result of specific antibody coating the particle. the phagocytic cell then extends pseudopods which engulf the particle. this event is followed by membrane fusion and a pinching off. as opposed to endocytosis, this process does not involve the membrane protein, clathrin, but rather actin. a physiologically relevant site of phagocytosis is the thyroid gland, where thyroid follicular cells phagocytose and digest thyroglobulin from the lumen of the thyroid follicle, thereby releasing the thyroid hormones, thyroxine triiodothyronine.
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