U2.1

Question 1

Infection as well as the development and progress of disease are related to two major factors: what are these factors?

Answer 1

1. a microbe’s virulence and pathogenicity
2. host’s immunity or resistance.

Question 2

In a general sense, our ability to recognize and defend ourselves as well as to ward off disease caused by infectious agents or their products is called _________?

Answer 2

immunity or resistance

Question 3

vulnerability or lack of immunity of the host to harm by infectious agents is referred to as ________?

Answer 3

susceptibility

Question 4

When pathogens attack our bodies, we defend ourselves by utilizing our various ________________?

Answer 4

immune defense mechanisms

Question 5

The body’s ability to recognize and defend itself as well as to ward off disease caused by infectious agents or their products is called ______________?

Answer 5

immunity or resistance

Question 6

Our body possesses an elaborate network of defenses which involve barriers (the skin and mucus membranes), cells, and chemicals, that prevent entry, establishment and invasion of pathogens. When pathogens attack our bodies, it must first overcome 3 lines of defenses. What are these three lines of defenses?

Answer 6

Non-Specific Defense
Specific Defense
The Duality of the Immune System