Unit Eleven - Human Body - Immune System

Question 1

Definition of Immune System

Answer 1

Body’s defense system against disease

Question 2

Definition of B - Cells (4)

Answer 2

1. Type of WBC & Lymphocytes
2. Make Antibodies
3. Marks pathogen for destruction
4. Y - Shaped Receptors allow for bondage to Antigens

Question 3

Definition of White Blood Cells (3)

Answer 3

1. Attack/Inactiviate Pathogens
2. Specialized receptors detect antigens (ID tags on pathogens)
3. Signal the immune system to respond accordingly.

Question 4

What are two types of WBC?

Answer 4

Lymphocytes & Phagocytes

Question 5

Definition of Macrophages (9)

Answer 5

1. Type of WBC & Acts as Phagocytes
2. Identifies & engulfs pathogen thru Phagocytosis
3. Enzymes breaks down pathogen
4. Act as an Antigen Presenting Cell
5. Displays pieces of pathogen on its surface using
6. Flags the invader’s presence to Specific Imm. Sys.
7. Recognized by T - Cells/B - Cells
8. Make Antibodies
9. Makes memory cells for 2nd exposure

Question 6

What are types of lymphocytes?

Answer 6

B - Cells & T - Cells

Question 7

Definition of Phagocytes (3)

Answer 7

1. Type of WBC
2. Eat & Destroy Pathogens
3. Engulf Pathogen
4. Phagocytosis

Question 8

What are types of phagocytes? (3)

Answer 8

1. Macrophages
2. Neutrophils
3. Monocytes

Question 9

What role does the stomach play in the Immune System? (2)

Answer 9

1. Second Line of Defense
2. Produces Acid that lower pH
3. Creates environment that can kill bacteria

Question 10

Definition of Lymphocytes

Answer 10

Deal with Specific Invaders

Question 11

Definition of Antigens (4)

Answer 11

1. Chemical Markers/ID Tags
2. Notifies what the pathogen is
3. Trigger Immune Response

Question 12

Definition of T - Cells

Answer 12

Recognize & Kill Pathogens

Question 13

What are the three immunity divisions?

Answer 13

1. Nonspecifc Defenses
2. Specific Defenses
3. Acquired Immunity

Question 14

Definition of Nonspecific Defenses (2)

Answer 14

1. WBC fights everything w/o a self ID tag
2. Fast - acting Response

Question 15

What is considered the first line of defense?

Answer 15

The Skin

Question 16

What role does the Skin play in the First Line of Defense (2)

Answer 16

1. Physical barrier to keep pathogens out
2. Sweat/Mucus/Tears have enzymes to kill bacteria

Question 17

What is the Second Line of Defense?

Answer 17

Nonspecific White Blood Cells

Question 18

Definition of Pyrogens (5)

Answer 18

1. Second Line of Defense
2. Type of Inflammatory Response
3. Raised body temp.
4. To denature enzymes
5. Slow growth/replication of pathogen
6. Increases WBC division (mitosis)

Question 19

Definition of Inflammatory Response

Answer 19

Initiated in response to an infection/injury

Question 20

Definition of Swelling

Answer 20

1. Inflammatory Response
2. Swelling w/ lymph occurs in response to infection
3. bc blood transports WBC & macrophages for pathogens

Question 21

Definition of Lymph (5)

Answer 21

1. Circulating clear/pale fluid
2. In lymphatic system (part of the immune system)
3. Contains WBC like lymphocytes
4. Helps remove waste/toxins/unwanted materials from tissues
5. Lymph/lymph nodes/lymph vessels are in lymphatic system

Question 22

Definition of Interferon (2)

Answer 22

1. Produced by Infected Body Cells
2. Blocks receptor of healthy body cells