Immune System and Phagocytosis Overview

This set of flashcards covers key concepts related to the immune system, specifically focusing on phagocytosis, the role of phagocytes, and the mechanisms by which the body eliminates pathogens.

What are phagocytes responsible for in the immune system?

Phagocytes are responsible for ingesting and eliminating pathogens.

Which enzymes are involved in the digestive system that help eliminate microbes?

Lysozyme in saliva and HCl in the stomach are involved in eliminating microbes.

What do commensal bacteria do in the body?

Commensal bacteria outcompete pathogens for food and space.

How do phagocytes recognize and initiate the process of phagocytosis?

Phagocytes are attracted by substances and recognize foreign antigens.

What happens to the contents of a phagosome during phagocytosis?

The contents of a phagosome are released into the phagosome after fusion with lysosomes, where pathogens are digested.

What is the function of antibodies?

Antibodies identify and neutralize foreign objects.

What triggers an inflammatory response?

Injury or infection activates immune cells.

What is the role of T-cells?

T-cells identify and destroy infected cells.

What do B-cells produce?

B-cells produce antibodies against antigens.

What is innate immunity?

Immediate, non-specific defense against pathogens.