The Lymphatic System Flashcards
What is one function of the lymphatic system?
To return fluids that have collected in the tissues to the bloodstream
What is tissue fluid that lacks proteins called when it moves into lymphatic capillaries?
Lymph
What do lymph capillaries merge to form?
Lymph vessels
Through which structure does lymph return to the heart?
Superior vena cava
What are the small organs that filter lymph called?
Lymph nodes
What do lymph nodes trap as lymph passes through?
Foreign particles, microorganisms, and other tissue debris
What type of white blood cells do lymph nodes store?
Lymphocytes
What happens to lymph nodes during an infection?
They may become inflamed, swollen, and tender
How does the blood vessel system differ from the lymph vessel system?
Blood vessels form a complete circuit; lymph vessels form a one-way system
What structures are lymph capillaries similar to?
Blood capillaries
What do larger lymph vessels resemble?
Veins
What do lymph vessels contain to prevent backward fluid movement?
Valves
Name three components of the lymphatic system.
- Tonsils
- Thymus
- Spleen
True or False: The lymphatic system forms a complete circuit.
False
Fill in the blank: The lymphatic system is part of the _______ system.
Circulatory
What is the primary role of lymph nodes in the lymphatic system?
To filter lymph and store lymphocytes
