Immune System
Blood Components
Diseases & Disorders
Body Defenses
Organs & Functions
100

These white blood cells “eat” harmful substances.

 What are phagocytes?

100

These blood cells carry oxygen using hemoglobin.

What are red blood cells (erythrocytes)?

100

This blood disorder results in low oxygen due to too few RBCs or hemoglobin.

What is anemia?

100

The skin, mucus, and stomach acid are examples of these.

What are barrier defenses?

100

This organ filters blood and helps fight infection.

What is the spleen?

200

These cells produce antibodies to fight invaders.

What are B cells (B Lymphocytes)?

200

These blood fragments help your blood clot.

What are platelets (thrombocytes)?

200

This genetic disorder causes blood to not clot properly.

What is hemophilia?

200

This immune response brings redness, swelling, heat, and pain.

What is inflammation?

200

This organ trains T cells, especially in children.

What is the thymus?

300

These cells attack infected cells directly.

What are T cells?

300

These are the three formed elements of blood.

What are red blood cells, white blood cells, and platelets?

300

This disease is caused by cancer of white blood cells.

What is leukemia?

300

These substances cause allergies even though they’re harmless.

What are allergens?

300

These small structures filter lymph fluid and trap pathogens.

What are lymph nodes?

400

These special cells “remember” infections for faster response next time.

What are memory cells?

400

The clear part of blood that carries proteins, nutrients, and waste.

What is plasma?

400

These diseases occur when the immune system attacks the body’s own cells.

What are autoimmune disorders?

400

This term describes proteins that attack foreign antigens.

What are antibodies?

400

This system removes excess fluid and supports immune defense.

What is the lymphatic system?

500

This type of T cell activates other immune cells to start reactions.

What is a helper T cell?

500

These proteins in plasma help with clotting and defense.

What are plasma proteins?

500

Name three autoimmune disorders.

What are MS, lupus, and rheumatoid arthritis (or others like Graves’, type 1 diabetes, etc.)?

500

A weakened or inactive pathogen that triggers an immune response.

What is a vaccine (vaccination)?

500

This organ helps detoxify waste and its failure can cause jaundice.

What is the liver?

M
e
n
u