Innate Immunity exam Flashcards

The body's first line of defense against pathogens, employing a nonspecific response.

Acts as a physical barrier to protect the body from pathogens.

A slimy secretion that traps foreign invaders and contains antimicrobial enzymes.

White blood cells that initiate the innate immune response.

The process by which phagocytes engulf and digest pathogens.

Membrane receptors that identify pathogen-associated molecular patterns (PAMPs).

They identify PAMPs and initiate a signaling cascade to recruit other immune cells.

A response characterized by swelling and recruitment of immune cells to combat infections.

A system of proteins that aids in lysing pathogens and enhancing immune defense.

Phagocytes that circulate in the blood and are attracted to infected tissues by cytokines.

Phagocytes that reside in tissues and organs, defending against pathogens.

Phagocytes that stimulate the adaptive immune system by presenting antigens.

Immune cells that defend against multicellular parasites.

Cells that identify and destroy virus-infected cells by triggering apoptosis.

Cytokines that induce cells to interfere with viral replication.

A type of cytokine that recruits cells to the infection site.

Histamine, which constricts blood vessels to reduce blood flow and prevent blood loss.

Signaling molecules that attract other immune cells and help mount an immune response.

Enzymes that break down bacterial cell walls.

Molecules commonly displayed by pathogens that are recognized by the immune system.

Recognizes lipopolysaccharides from bacteria and releases cytokines in response.

A chemical signal released by mast cells that constricts blood vessels in the area of infection.

Form pores in the membranes of pathogens, causing them to lyse.

Phagocytes that circulate in the blood and are attracted to infected tissues by cytokines.

To recruit immune cells to the site of infection and combat pathogens.

A type of PAMP found on the surface of bacterial cells.

Recruit immune cells to the site of infection.

Cells that perform phagocytosis to eliminate pathogens.

They attract other immune cells and help mount an immune response.