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What is a function of the lymphatic system?
Transport excess fluid away from interstitial spaces between cells in most tissues and return it to the blood stream, Help defend body against invasion.
What do lymphatic pathways start as?
Lymphatic capillaries that merge to form larger vessels that empty into the circulatory system.
What do large lymphatic vessels pass through and merge to what?
Pass through lymph nodes and merge to form lymphatic trunks.
When does tissue fluid become lymph?
Tissue fluid becomes lymph once it has entered a lymphatic capillary; lymph formation depends on tissue fluid formation.
What is tissue fluid made up of?
Water and dissolved substances that leave blood capillaries by filtration and diffusion.
What propel lymph through lymphatic vessels?
Skeletal muscle contraction, breathing movements, and contraction of smooth muscle in the walls of lymphatic trunks.
Where are Lymph nodes located?
Along lymphatic pathways, which occur in chains along the parts of the larger lymphatic vessels
What are the functions of lymph nodes?
Filtering potentially harmful particles from lymph before returning it to the blood stream, and immune surveillance.
What is thymus?
Soft, bi-lobed structure enclosed in a connective tissue capsule that extends inside and divides into lobules
Contains an antigen that can stimulate primary immune response against a particular diseas causing agent?
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