Innate Defenses

General term for a disease causing agent

• cancer

• pus

• interferon

• pathogen

• virus

Which innate defense is known as the first line of defense?

• Inflammation

• Fever

• Mechanical barriers

• Natural Killer cells

Which of the following is not part of Mechanical barriers?

• skin

• hair

• sweat

• pus

Name the chemical defense that warns other cells about infection.

• pepsin

• interferons

• perforins

• lysozyme

What term refers to white blood cells engulfing and digesting pathogens?

• inflammation

• pinocytosis

• phagocytosis

• assimilation

How do Natural Killer cells fight infection?

• They release antibodies that slow down pathogens

• They release perforins that destroy infected cells

• They release histamine which help inflammation

• They engulf and digest pathogens

How does a fever help with infections?

• increases blood vessel dilation

• slows down the growth and reproduction of bacteria

• causes the release of perforins that lyse bacteria

• causes phagocytic cells to attack more vigorously

Which of the following is not a phagocytic cell?

• Monocyte

• Lymphocyte

• Macropahge

• Neutrophil

What is the difference between Monocytes and Macrophages?

• Macrophages are Monocytes that have left the bloodstream

• Macrophages are found in bone marrow will Monocytes roam the body

• Monocytes release antibodies while Macrophages engulf pathogens

• They is no difference, just a different name.

In bacterial infections, the resulting mass of white blood cells, bacterial cells and damaged tissue is known as....

• Inflammation

• bile

• complement

• pus