ANATOMY

GENERAL ANATOMY

IMMUNE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells that ingest (eat) pathogens are
A
plasma cells
B
phagocytic cells
C
helper T cells
D
antibodies
Explanation: 

Detailed explanation-1: -Phagocytosis consists in recognition and ingestion of particles larger than 0.5 m into a plasma membrane derived vesicle, known as phagosome. Phagocytes can ingest microbial pathogens, but importantly also apoptotic cells.

Detailed explanation-2: -Monocytes, macrophages, and neutrophils are phagocytes. A phagocyte is a type of white blood cell.

Detailed explanation-3: -The phagocytes move by a method called chemotaxis. When phagocytes come into contact with bacteria, the receptors on the phagocyte’s surface will bind to them. This binding will lead to the engulfing of the bacteria by the phagocyte. Some phagocytes kill the ingested pathogen with oxidants and nitric oxide.

Detailed explanation-4: -Phagocytosis is a cellular process for ingesting and eliminating particles larger than 0.5 m in diameter, including microorganisms, foreign substances, and apoptotic cells. Phagocytosis is found in many types of cells and it is, in consequence an essential process for tissue homeostasis.

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