Lymphatic System Flashcards
microorganisms that cause disease or damage to tissues.
Pathogen
protects the body. Does not circulate fluid, but carries it in one direction (tissues to circulatory system).
Lymphatic System
27L of pass from interstitial spaces back to blood capillaries.
Lymph: excess 3L of fluid that enters lymphatic capillaries.
Edema: caused by Lymph remaining in interstitial spaces.
Maintenance of Fluid Balance
Lacteals: lymphatic vessels in the lining of the small intestine that absorb lipids & other substances.
Chyle: lymph that appears white due to lipid content.
Lipid Absorption
Spleen: filters pathogens from blood.
Lymph nodes: filters pathogens from lymph.
Defense
caused by Lymph remaining in interstitial spaces.
Edema
excess 3L of fluid that enters lymphatic capillaries.
Lymph
lymphatic vessels in the lining of the small intestine that absorb lipids & other substances.
Lacteals
lymph that appears white due to lipid content.
Chyle
filters pathogens from blood.
Spleen
filters pathogens from lymph.
Lymph Nodes
lymphatic capillaries joined together which appear beaded due to presence of one way-valves.
Lymphatic Vessels
consist of LV from the right upper limb, right half of head neck and chest. It empties into the right subclavian vein.
Right Lymphatic Duct
LV from the rest of the body. Empty into the left subclavian vein.
Thoracic Duct
- tiny, close-ended vessels consisting of simple squamous epithelium.
- Very permeable due to lack of basement membrane.
- Overlapping squamous cells prevent backflow of fluid.
Lymphatic Capillaries
houses lymphocytes and other defense cells (i.e macrophages). It has very fine reticular fibers.
Lymphatic tissue
cells that originate in Red bone marrow, which responds to pathogens by dividing and increasing in number.
Lymphocytes
forms protective ring of lymphatic tissue.
Tonsils
aka “the tonsils”, located on each side of the posterior opening of the oral cavity.
Palatine Tonsils
near the internal opening of the nasal cavity.
Pharyngeal Tonsil
enlarged pharyngeal tonsil.
Adenoid
removal of pharyngeal tonsil.
Adenoidectomy
on the posterior surface of the tongue. Infected less often. Difficult to remove.
Lingual Tonsil
rounded structures.
Lymph nodes