Lesson 4 | The Lymphatic System



Name Date Class

LESSON 4

The Lymphatic System

Directions: On the line before each description, write the letter of the term that matches it correctly. Some terms

may be used more than once or not at all.

1. in the neck, groin, and armpits

2. a system that is part of the immune system

3. what lymph travels through

4. filter particles from lymph

5. site of B cell and T cell formation

6. organ that stores blood and platelets

7. a system that works closely with the circulatory

system

8. site of Hodgkin’s disease

9. tissue fluid absorbed by lymph vessels

10. clusters of small, spongy structures

11. spongy center of bones

12. where red and white blood cells form

13. organ that recycles worn-out red blood cells

14. stores white blood cells for attacking microorganisms

15. composed of salts, water, and white blood cells

16. site where T cells mature

17. organ that produces and stores lymphocytes

18. where uncontrolled production of white blood

cells, or lymphoma, occurs

19. a system that helps destroy microorganisms that

enter the body

20. trap and remove bacteria

A. lymphatic system

B. lymph

C. lymph vessels

D. lymph nodes

E. bone marrow

F. thymus

G. spleen

Respiration and Circulation 71

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Content Practice B

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