Write an essay with introduction and data conclusion about which part of the brain and or the body is reacting during when we see a spider. as much scientific as possible.

Dear writer,
The work that i have to do is only one part of the project.
the full project is about Phobia and my part only about Arachnophobia .
i need to write an introduction , data and conclusion.
the essay have to include witch part of the brain and or the body is reacting during when we see a spider. as much scientific as possible. with as many picture of the part of the brain or some graphic of the impact of this phobia on the body.
it has to include what is the impact to the person having this phobia on the everyday life.
as many psychology theory as possible too.
the essay as too include as well a small part explaining the possible solution to fix this phobia, scientific solution and or famous one.
and the conclusion