1. the Lymphatic System Is Unidirectional/Bidirectional?

Bio 255 SI

Unit 4D

Lymphatic System Worksheet

1. The lymphatic system is unidirectional/bidirectional?

2. Lymph travels into the node from a vessel via efferent/afferent vessels?

3. Specialized lymph capillaries found in the digestive tract are called ______.

They absorb what nutrient to form “chyle”? ______

4. A major difference between the cardiovascular system and the lymphatic system is the method of fluid movement. The lymphatic system lacks a ______.

5. When large lymphatic collecting ducts combine they form ______.

6. The right lymphatic duct drains which areas of the body?

7. The thoracic duct drains fluids from which part of the body?

8. What aids is the movement of lymphatic fluid through the body?

9. Something the body perceives as foreign, such as bacteria, toxins, viruses, foreign RBC’s, or cancer cells are called ______.

10. Lymphoid (immune cells) include ______, ______, ______, and ______.

Describe the various functions of each type of cell.

11. The lymphatic nodule, also called the ______, is the principal lymphoid organ. Aggregates of these are commonly found in the cervical, axillary and inguinal regions. What happens to these nodules in the onset of an infection? Why?

12. The main two functions of lymphatic nodules are ______and activation of the ______.

12. The two distinct regions of a node are the ______and ______or outer region and middle, respectively.

13. Describe the functions of all the lymphatic organs/tissues listed below.

Lymph Vessels-

Lymph Nodes-

Spleen-

Thymus Gland-

Tonsils-

Peyer’s Patches-

14. ______, also called MALT, functions to protect the digestive and respiratory systems from foreign matter. Which lymphoid organs does MALT utilize? (list 3)

15. Organs of the lymphatic system, except the thymus, are derived from which germ layer during fetal development?

The thymus is derived from which germ layer?

16. In general, the lymphoid organs are well/poorly developed at birth?