Who am I? Immunity

Question 1

I am the system that returns cellular waste products and excess fluid from the tissues to the circulatory system. Who am I?

Answer 1

Lymphatic system

Question 2

A primary lymphoid organ, located in the middle of the chest, I grow smaller with age. T lymphocytes come to me to proliferate and mature. Who am I?

Answer 2

Thymus

Question 3

I am the disease that occurs when the body mistakes what belongs in the body for something that does not belong in the body. When a person has this disease, the immune system actually launches an attack against itself! Who am I?

Answer 3

Autoimmune

Question 4

I am a substance that is recognized by the immune system as being foreign to the body. Who am I?

Answer 4

Antigen

Question 5

. I am a type of white blood cell; a category known for having large, varied nuclei. Many say that I am the MVP of the immune system! I can be a T-cell, a B-cell or a natural killer cell. Who am I?

Answer 5

Lympocytes

Question 6

I provide protection via the skin, the lining of the gastrointestinal system, sweat, saliva, tears, and inflammation. I am always present and on the ready to mobilize and attack immediately upon invasion. Who am I?

Answer 6

Innate immuntiy

Question 7

. I am produced by a type of B cell in response to an antigen. When I attach myself to an antigen, I help the body destroy or inactivate the antigen. I am also called an immunoglobulin. Who am I?

Answer 7

Antibody

Question 8

. I am the name given to the significant collection of lymphoid tissue associated with human mucosa. I am scattered throughout the body, but all together account for the largest mass of lymphoid tissue (approximately 400 m2!) You will find my type in areas such as the digestive tract, respiratory tract and genitourinary tracts. Who am I?

Answer 8

Mucosa associated lymphoid tissue

Question 9

I am a type of lymphocyte involved in the humoral immunity of the adaptive immune system. I come from the bone marrow and develop into blood cells called plasma cells that produce antibodies. Who am I?

Answer 9

B cell

Question 10

I am a flattened organ located in the left upper abdominal quadrant. Immune cells like to congregate in my area. I filter microorganisms and other foreign material from the blood. I also form lymphocytes and monocytes along with extra erythrocytes. Worn out RBCs come to me to be destroyed and removed. Who am I?

Answer 10

Spleen

Question 11

. I am an immunoglobulin that is found concentrated in body fluids such as tears, saliva, and secretions in the respiratory, reproductive and digestive tracts. I help guard these entrances to the body. I represent about 10 to 15% of the antibodies present in the body. Who am I?

Answer 11

IGA

Question 12

The third line of defense, I am the type of immunity that is slower to respond, but much more potent. I recognize specific invaders. Who am I?

Answer 12

Adaptive immunity

Question 13

. I am a small, bean-shaped structure where lymphocytes are often found. I filter harmful substances such as bacteria, viruses and malignant cells as lymph flows through me. Who am I?

Answer 13

Lymph node

Question 14

I am the largest and most diverse class of immunoglobulins in the plasma, and can be found in all body fluids. I am the smallest, but most common antibody, accounting for 75 to 80% of all antibodies in the body. I am important in the fight against bacterial and viral infections. I am the only type of antibody that can cross the placenta in pregnancy to help protect the fetus. Who am I?

Answer 14

IGG

Question 15

. Located on the surface of a cell, I am the chromosomal region containing genes that control whether antibodies recognize the cell as belonging to the body or not. Who am I?

Answer 15

Major histocompatibility complex (MHC)

Question 16

I am a small white blood cell that recognizes antigen fragments bound to cell surfaces by specialized antibody-like receptors. I represent a classification that accounts for approximately 80 percent of circulating lymphocytes. Who am I?

Answer 16

T cells

Question 17

. I am a coordinator. I am a type of T-cell that some consider the master controller of the immune system. Who am I?

Answer 17

Helper T cell

Question 18

I am an attacker. I directly attack other cells containing foreign or abnormal molecules on their surfaces. Who am I?

Answer 18

Cytotoxic T cell

Question 19

. I am a type of T cell that inhibits activation of the immune system. I am the peacemaker. Some call me a regulatory T cell. Who am I?

Answer 19

Supressor cell

Question 20

I am a lymphocyte that recognizes and kills stressed or infected cells (or those cells lacking self-MHC antigens). I am part of the innate immunity. Who am I?

Answer 20

Natural killer cells

Question 21

I am the largest antibody/ immunoglobulin. I can be found in blood and lymph fluid and I am the first type of antibody to respond to an infection. I account for about 5 to 10% of all the antibodies in the body. Who am I?

Answer 21

IGM

Question 22

I am a large and versatile immune cell that devours invading pathogens and other intruders. I once was a monocyte, but decided to migrate into the tissues. Specialized types of me can be found in many organs including the lungs, kidneys, brain and liver. Who am I?

Answer 22

Macrophage

Question 23

I am one of the white blood cells whose cytoplasm is filled with granules. When my numbers increase, it is often due to an allergic reaction. And, not to brag, but I am also quite effective in killing parasites, such as worms. Who am I?

Answer 23

Eosinophil

Question 24

I am a white blood cell that is abundant and phagocytic. I am short-lived and very motile. A type of granulocyte, I am produced rapidly when foreign substances are first detected. Who am I?

Answer 24

Neutrophil

Question 25

I am a white blood cell that contributes to inflammatory reactions. Along with my twin, the mast cell, I am responsible for symptoms of allergy. Who am I?

Answer 25

Basophil

Question 26

I am considered the twin of a basophil, except that I am not a blood cell. I live, instead in the connective tissue of the lungs, skin, tongue and linings of the nose and intestinal tract. I am also responsible for the symptoms of allergy. What am I?

Answer 26

Mast cell

Question 27

Also known as adaptive immunity, I am the type of immunity that is not present at birth. I develop once the body has been exposed to an antigen. I can either be active or passive. Who am I?

Answer 27

Acquired immunity

Question 28

I am a preparation that stimulates the immune response in order to prevent infection or to create resistance to an infection. I do not cause disease, I help to prevent it. Who am I?

Answer 28

Vaccine

Question 29

I am the type of acquired immunity resulting from the transfer of antibodies or antiserum produced by another individual. Who am I?

Answer 29

Passive immunity

Question 30

I am the type of acquired immunity that develops after exposure to an antigen, as a consequence of the immune response. I can develop as a result of 1) natural exposure to an antigen in the environment, or 2) from deliberate exposure to an antigen. Who am I?

Answer 30

Active immunity

Question 31

I am a type of disorder that occurs when the immune system responds to a false alarm. I may respond to harmless materials such as ragweed, house dust, or grass pollen. Who am I?

Answer 31

Allergy

Question 32

I am a type of immunity that is mediated by the B-cells and is primarily antibody production. Who am I?

Answer 32

Humoral immunity

Question 33

I am a type of immunity that is mediated by T-cell functions. Who am I?

Answer 33

Cell-mediated immunity

Question 34

I represent a large number of plasma proteins and participate in the second line of defense; inflammation. When activated I contribute to the production of factors that serve as potent defenders. Who am I?

Answer 34

Complement system