Chapter 20 - Immunologic Emergencies

Question 1

The __________ system protects the body from foreign substances and organisms.

Answer 1

immune

Question 2

When a foreign substance invades the body the body:

Answer 2

goes on alert

initiates a series of responses to inactivate the invader

Question 3

An _________ reaction is an exaggerated immune response to any substance.

Answer 3

allergic

Question 4

An allergic reaction is not caused directly by an ________ stimulus, such as a bite or sting.

Answer 4

outside

Question 5

An allergic reaction is caused by the body’s immune system which releases _________ to combat the stimulus.

Answer 5

chemicals

Question 6

The chemicals __________ and _________ both contribute to an allergic reaction.

Answer 6

histamines

leukotrienes

Question 7

Given the right person and the right circumstances, almost any substance can become an ________.

Answer 7

allergen

Question 8

The first time a person becomes exposed to the substance is called _________.

Answer 8

sensitized

Question 9

After the person has first been exposed (sensitized) to a substance, their immune system learns to _________ the substance.

Answer 9

recognize

Question 10

An ______ _______ occurs after the person becomes sensitized to a substance and after their immune system learns to recognize it.

Answer 10

allergic reaction