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Ch 20 Lymphatic System
Terminology and Pathologies
47
Anatomy
Undergraduate 2
03/29/2018

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Term
Lymph
Definition
Fluid found within the lymphatic system
Term
Lacteal
Definition
The lymphatic vessels in the villi of the small intestines
Term
Chyle
Definition
High-fat, milky-white lymphatic fluid in the small intestines
Term
Lymphatic Vessel
Definition
A vessels that are comprised of numerous smaller lymphatic capillaries that carry lymph
Term
Lymphatic Capillaries
Definition
Tiny and thin-walled vessels that are located next to the blood capillaries and join to form lymphatic vessels
Term
Lymph Nodes
Definition
A gland that filters the lymphocytes and activates the immune response from the immune system
Term
Lymphatic Trunks
Definition
A large vessel comprised of numerous lymphatic vessels
Term
Lymphatic Ducts
Definition
A big lymphatic vessel that empties into the veins where the internal jugular and subclavian vein meet
Term
Right Lymphatic Duct
Definition
The lymphatic duct that drains into the right side of the head, right upper arm, and right thorax
Term
Thoracic Duct
Definition
The lymphatic duct that drains into the entire body besides the head, upper arm, and right thorax
Term
Lymphocytes
Definition
Leukocytes that plays a large role in defending the body against diseases and foreign substances
Term
B Cells/Lymphocytes
Definition
Lymphocytes responsible for producing antibodies
Term
T Cells/Lymphocytes
Definition
Lymphocytes that actively participate in immune responses
Term
Antigens
Definition
Molecules that provokes an immune response from the lymph nodes
Term
Macrophages
Definition
Monocytes that go around the body tissue and phagocytize foreign substances and altered tissues and cells; Also help activate T Cells/Lymphocytes
Term
Reticular Connective Tissue
Definition
Fine collagen fibers that act as a filter for the passing lymph or blood in the lymph nodes and spleen
Term
Primary Lymphoid Organs
Definition
The red bone marrow and thymus gland where B and T Cells/Lymphocytes
Term
Secondary Lymphoid Organs
Definition
Lymph nodes and the spleen where mature lymphocytes first encounter antigens and are activated
Term
Mucosa-Associated Lymphoid Tissue (MALT)
Definition
Tissue that sends out the first wave to defend against foreign invaders
Term
Bronchus-Associated Lymphoid Tissue (BALT)
Definition
Tissue that is effective in defending against inhaled pathogens
Term
Afferent Lymphatic Vessels
Definition
Vessels that carry lymph towards the lymph nodes
Term
Efferent Lymphatic Vessels
Definition
Vessels that carry lymph away form the lymph nodes
Term
Metastasize
Definition
The development of malignant cancer
Term
White Pulp
Definition
Tissues in the spleen that is associated with the liver and has a high concentration of B and T Cells/Lymphocytes
Term
Red Pulp
Definition
3/4 of the tissue in the spleen that is made of reticular connective tissue, a lot of Erythrocytes, and enlarged capillaries
Term
Splenic Cords
Definition
Cords found in the red pulp made of fibrils and connective tissue cells with lots of macrophages and lymphocytes in it
Term
Tonsils
Definition
Lymphatic nodules that form a big ring around the oral cavity
Term
Palatine Tonsils
Definition
The largest pair of tonsils located on either side of the oropharynx
Term
Pharyngeal Tonsils
Definition
Tonsil that is located near the nasopharynx
Term
Lingual Tonsils
Definition
Tonsil on the posterior surface of the tongue
Term
Thymus Gland
Definition
Lymphoid gland that produces T Cells/Lymphocytes and stops growing the 1st year of birth
Term
Involution
Definition
The shrinkage of an organ due to old age or inactivity
Term
Thymosin
Definition
Hormone that developing T Cells/Lymphocytes need for maturation
Term
Buboes
Definition
Infected lymph nodes that has become inflamed, swollen, and tender to the touch
Term
Splenectomy
Definition
Surgical removal of the ruptured spleen
Term
Splenomegaly
Definition
Abnormal enlargement of the spleen
Term
Tonsillectomy
Definition
Surgical procedure for the removal of both palatine tonsils
Term
Tonsillitis
Definition
Inflammation of the tonsils
Term
Lymphedema
Definition
Swelling of tissues in the extremities due to the blockage of lymphatic vessels and accumulation of lymph
Term
Elephantiasis
Definition
The result of blocked lymphatic vessels
Term
Roundworms
Definition
Worms that get into the lymphatic vessels and block lymph flow causing accumulation in interstitial spaces and lymphatic vessels that leads to permanent swelling and limb enlargement, Sometimes genitals are effected too
Term
Lymphadenitis
Definition
Inflammation of the lymph nodes
Term
Septicemia
Definition
Blood poisoning
Term
Bubonic Plague
Definition
Bacteria that has gone into the lymph nodes to replicate and enlarge them
Term
Hodgkin's Lymphoma/Disease
Definition
Cancer that comes from abnormal B Cells/Lymphocytes
Term
Non-Hodgkin's Lymphoma/Disease
Definition
The title for all cases of lymphoma that aren't Hodgkin's Lymphoma
Term
Reticular Cells
Definition
cells that produce fine collagen reticular fibers
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