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Lymphatic System Contains lymph, lymphatic vessels, lymphoid organs, and lymphoid tissue
Lymphatic Vessels Return tissue fluid to the blood
Lymphoid Tissue Helps the body defense itself against disease
Lymph A clear fluid that resembles plasma. Compose primarily of water, electrolytes, waste from metabolizing cells, and some protein that leaks out of the capillaries of the systematic circulation
Lymphatic Duct Large tube or vessel that carries lymph, such as the thoracic duct; same as lymphatic vessel
Lymphoid Organs Lymph nodes, tonsils, thymus gland, and spleen. Along with the tissue, helps defend the body against disease by filtering particles (cancer, pathogens) from the nymph
MALT Mucosal-associated lymphoid tissue - lymphoid tissue found in mucous membrane
Lymph Nodes Small pea-shaped patches of lymphatic tissue strategically located to filter the lymph as it flows through the lymphatic vessel. Tend to appear in clusters
Cervical Lymph Nodde Drain and cleanse lymph coming form the head and neck areas. Enlarged tender cervical lymph noes often accompany upper respiratory infections
Axillary Lymph Nodes Located in the axillary area (armpit). Drain and cleanse lymph coming from the upper extremities, shoulders, and breast area
Inguinal Lymph Node Located in the groin region. Drain and cleanse lymph from the lower extremities an external genitalia
Lymph Nodules Masses of lymphocytes and macrophages. Defensive cells that are concerned with immunity an phagocytosis; protect body from disease
Tonsils Partially encapsulated lymph nodes in the throat area. Filter tissue fluid contaminated by pathogens that enter the body through the nose, mouth, or both. 3 sets
Palatine Tonsils Small masses of lymphoid tissue located at the opening of the oral cavity into the pharynx. A tonsillectomy is most often performed on this particulate set of tonsils
Pharyngeal Tonsils Adenoids. Located near the opening of the nasal cavity int he upper pharynx. Atrophy during adolescence
Lingual Tonsils Back of the tongue. White spots
Thymus Gland Locate int he mediastinum of the thoracic cavity. Plays a crucial role in the development of the immune system before birth and in the first few months after birth. Secretes thymosins
Thymosins Promote the proliferation and maturation of special lymphocytes (T cells) in the lymphoid tissue throughout the body
Spleen Largest lymphoid organ. Located in the LUQ of the abdominal cavity, just beneath the diaphragm. Stores blood. Destroys old RBCs. Filters blood and is composed of 2 types of tissue: white pulp and red pulp
White Pulp Lymphoid tissue consisting primarily of lymphocytes surrounding the arteries
Red Pulp Venous sinuses filled with blood and disease-preventing cells such as lymphocytes and macrophages.
Hypersplenism Disorder in which an overactive spleen prematurely destroys red blood cells, white blood cells, and platelets, thereby causing anemia, leukopenia, and thrombocytopenia
Splenomegaly An enlarged spleen, it usually accompanies hypersplenism an the excessive destruction of blood cells )
Lymphadenopathy Disease of the lymph noes, but is used synonymously with "swollen or enlarged lymph nodes"
Lymphedema Condition in which there is localized tissue swelling cause by damaged lymphatic vessels and poor drainage of tissue fluid
Lymphoma A solid malignant tumor of lymphoid cells, specifically the lymphocytes. Two main categories: Hodgkin Lymphoma (HL) and non-Hodgkin Lymphoma (NHL)
Created by: Abraham321