Lucas has to take a quiz at school abbout the lymphatic and immune system. Choose the correct way to complete each sentence.

Vocabulary Quiz

_____are tiny organisms not visible to the naked eye and inciude bacteria, viruses, and protozoans
___are a type of blood cell that protects the body from disease, circulates in the lymphatic vessels and resides in lymphatic organs.
The two main types of leukocytes are lymphocytes and_____
,which effectively eat up bacteria and diseased cells
1. Microorganisms or reed steinberg cells

2. Erythrocytes or lymphocytes

3.phagocytes or thrombocytes