2. What are the two groups of
defense mechanisms of the
body against foreign or
harmful agents? What is the
difference between them?

Gap-fill exercise

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The body has many
mechanisms against foreign pathogenic
.These mechanisms are divided
into groups: the specific
mechanisms the unspecific
mechanisms. The mechanisms
are part of immune system and
comprehend humoral immune
response and cellular immune
response that produce
antibodies and defense against
specific antigens. The
mechanisms fight in a manner
any type of (they do not have
) and in them a of
defense means are , like the
skin barrier foreign agents,the
mucous and epithelium of the
airway, (the inflammatory
response) and action of unspecific
proteins defense cells (e.g.,
interferons macrophages).