Chapter 21: Allergy & Anaphylaxis

Question 1

Immunology

Answer 1

The study of the body’s immune system

Question 2

Immune System

Answer 2

Body system that includes all structures & processes designed to mount a defense against foreign substances & disease-causing agents

Question 3

Histamines

Answer 3

Chemical substances released by the immune system in allergic reactions that are responsible for many of the symptoms of anaphylaxis

Question 4

Lekotrienes

Answer 4

Chemical substances that contribute to anaphylaxis; released by the immune system in allergic reactions

Question 5

Allergen

Answer 5

A substance that causes an allergic reaction

Question 6

Anaphylaxis

Answer 6

An extreme, life-threatening systemic allergic reaction that may include shock & respiratory failure

Question 7

Uticaria

Answer 7

Small areas of generalized itching/burning that appear as multiple raised areas on the skin (hives)

Question 8

Angioedema

Answer 8

Areas of localized swelling beneath the skin, often around the eyes and lips, but can also involve other body areas

Question 9

Wheezing

Answer 9

A high-pitched, whistling breath sound that is most prominent on expiration, and which suggests an obstruction/narrowing of the lower airways (asthma, bronchiolitis)

Question 10

Stridor

Answer 10

A harsh, high-pitched respiratory sound, heard during inspiration, caused by partial blockage or narrowing of the upper airway, may be audible w/o a stethoscope

Question 11

Envenomation

Answer 11

The act of injecting venom

Question 12

Wheal

Answer 12

A raised, swollen, well-defined area on the skin resulting from an insect bite or allergic reaction