Lymphatic System

1. The stage of life when the thymus is most active in developing the immune system.
3. Nutrients absorbed by the lymphatic system from the digestive system.
5. A fluid that carries oxygen, nutrients, and waste throughout the body.
6. The basic building blocks of all living things.
8. Body parts that perform specific functions (like the spleen or thymus).
9. An organ where T cells grow and learn to fight infections, especially active in childhood.
10. Tube-like structures that carry fluids (like lymph or blood) through the body.
11. (Lymph Nodes)Small structures that filter lymph and trap harmful substances.
12. (Blood Cells)Cells in the body that fight infections and protect against illness.
14. Unwanted or harmful materials that the body needs to remove.
17. Something that moves fluid; the lymphatic system does not have a central pump like the heart.
19. The process of keeping fluids in the body at stable and healthy levels.
20. Tissues in the throat that help trap and fight germs.
23. Body tissue that helps move lymph through vessels when it contracts.
24. Harmful germs (like bacteria and viruses) that cause disease.
26. The system that breaks down food and absorbs nutrients.
27. The flow of blood moving through the body.

2. Conditions that happen when harmful germs enter the body and multiply.
4. The body system that moves blood, oxygen, and nutrients through the body.
7. Tiny pathogens that invade cells and cause illness.
13. The body’s defense system against infections and diseases.
15. An increase in size of a body part, often caused by fluid buildup (also called edema).
16. Cells White blood cells that attack infected or abnormal cells.
18. Being in a good physical condition with proper body function.
21. An organ that filters blood and helps fight infections.
22. Fluid Fluid found between cells that can become lymph when collected.
25. A clear fluid that carries white blood cells and removes waste and germs.