22.1 The Concept of Immunity

Question 1

immunity

Answer 1

• the ability to ward off damage of disease through our defenses
• has two general types: innate (nonspecific) immunity and adaptive (specific) immunity

Question 2

innate immunity

Answer 2

• immunity which does not involve specific recognition of a microbe (acts on all microbes the same way)
• includes the first line (skin, mucous membranes) and second (natural killer cells, phagocytes, inflammation, fever) lines of defense

Question 3

adaptive immunity

Answer 3

• immunity which involves the specific recognition of a microbe once it has breached the innate immunity defenses
• includes T lymphocytes (T cells) and B lymphocytes (B cells)

Question 4

lymphatic system

Answer 4

• the system which assists in circulating body fluids to help defend the body against disease-causing agents
• consists of a fluid called lymph, lymphatic vessels, organs containing lymphatic tissue, red bone marrow

Question 5

lymph

Answer 5

• interstitial fluid which has passed into a lymphatic vessel
• the only difference between this and interstitial fluid is the location, otherwise it is the same fluid

Question 6

lymphatic tissue

Answer 6

-a specialized form of reticular connective tissue which contains a large number of lymphocytes

Question 7

three primary functions of the lymphatic system

Answer 7

• draining excess interstitial fluid
• transporting dietary lipids
• carries out immune responses