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NAU Lymphatic System & Immunity

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Greek for clear water   Lymph  
This system starts in tissues, travels to lymph nodes, then dumps into the blood system   Lymphatic system  
Name the 3 functions of the Lymphatic system:   1. Fluid balance 2. Protection from infection 3. Absorption of fats  
Picks up excess fluid and protein behind in the tissues during fluid & nutrient exchanges between the blood and tissues   Fluid balance  
Filters out pathogens & other cellular debris so the lymphocytes can dispose of it.   Protection from infection  
Defense cell residents of the lymph system   Lymphocytes  
This is too large to be absorbed into the blood through intestinal capillaries, then deposited to certain parts of the body   Absorption of fats  
Filters of lymph once it has drained from the tissue. Generally sequestered near a joint.   Lymph Nodes  
7 types of lymph nodes   Cervical, Axillary, Trachebronchial, Supratrochlear, Mesenteric (Abdominal), Inguinal and Pelvic  
Lymph node of the neck. Inflamed if has a head cold, sinus infection or any infection involving the head and neck region.   Cervical lymph node  
Lymph node of the armpit, can be inflamed if patient has breast cancer   Axillary lymph node  
Lymph node of the thoracic area, near the trachea. Can swell if patient has a respiratory infection.   Trachebronchial lymph node  
Lymph node of the medial side of the elbow. Can swell due to allergies.   Supratrochlear lymph node  
Lymph node of the abdomen. Sandwiched between the peritoneum. Can swell with abdominal or colon disorders.   Messenteric (Abdominal) lymph node  
Lymph node of the groin region where the leg attaches to the body. In adults infections in this are are sequestered. In children since the trunk is small infection can travel here.   Inguinal lymph node  
Lymph node of the pelvic region   Pelvic lymph node  
3 Major filtration in the body   Liver, Spleen and Kidneys  
Blood Filtration   Spleen and Liver  
Electrolyte Filtration   Kidneys  
Is the largest of the lymphatic organs. Located in upper abdominal cavity just below diaphragm, composed of: white pulp containing many lymphocytes & red pulp containing RBC's filled with blood instead of lymph. Functions similar to other lymphoid tissue.   Spleen  
Special functions of the spleen   Cleans blood of impurities by filtration & phagocytosis; Destroys old worn out RBC's, retrieves iron & other recyclable products and sends to liver; Produces RBC's before birth; Serves as a reservoir for blood in case of an emergency or severe anemia.  
Located anterior to the aortic arch & behind the body of the sternum. Functions in both lymphoid capacities using T-lymphocytes & hormonal capacities which secrete thymosins which activate the maturation of the T lymphocytes.   Thymus  
Name the innate (nonspecific) Defenses   Species resistance; Mechanical barriers; Chemical barriers; Natural Killer cells; Inflammation; Phagocytosis; Fever  
Defense specific for a particular species   Species Resistance  
Skin, mucous membrane, earwax, cilia as defenses   Mechanical barriers  
Defense where gastric juice, tears containing pathogen enzymes protect body   Chemical barriers  
Distinct types of lymphocytes that secretes perforins that lyse virus-infected cells and cancer cells   Natural Killer cells  
A tissue response to injury that helps prevent the spread of infectious agents into nearby tissues   Inflammation  
Neutrophils, monocytes and macrophages engulf and destroy foreign particles and cells   Phagocytosis  
Elevated body temperature inhibits microbial growth and increases phagocytic activity.   Fever  
Types of chemical barriers   Interferons, Defensins, Collectins, Complement  
Hormonelike peptides that lymphocytes & fibroblasts produce in response to viruses or tumor cells. They interfere with replication   Interferons  
Peptides produced by neutrophils & other other types of granular white blood cells, makes holes in bacterial cell walls and membranes, making the cell cripple to microbes   Defensins  
Are proteins that provide broad protection against bacteria, yeasts and some viruses.   Collectins  
A group of proteins in plasms and other body fluids that interact in a series of reactions or a cascade.   Complement  
Adaptive (specific) defenses or Immunity   Antigens, Immune Responses, Allergic Reactions, Transplantation & Tissue Rejection, Autoimmunity  
Cell markers that help identify body cells to the body itself   Antigens  
Detectable concentrations of antibodies that appear in the body following an exposure to foreign antigens.   Immune Responses  
Organs or other body material that is not recognized by the body as original parts and are attacked.   Transplantation & Tissue Rejection  
When the immune system fails to distinguish itself from nonself, producing antibodies that attack & damage the body's tissues & organs. The body attacking itself to the extreme. Ex: AIDS, HIV   Autoimmunity  
An individual's power to resist or overcome the effects of a particular disease agent or its harmful products   Immunity  
2 Types of Immunity   Inborn and Acquired Immunity  
Inherited immunity against a particular disease or harmful products   Inborn Immunity  
2 Types of Acquired immunity   Natural and Artificial Immunity  
Contact with the disease. Exposure to chicken pox.   Active, Natural Acquired Immunity  
Immunity through the mother's milk or placenta   Passive, Natural Acquired Immunity  
Vaccine containing a "dead" version of the toxin. Ex: flu, measles, rubella vaccinations   Active, Artificial Acquired Immunity  
Immune serum, antiserum containing small amounts of the "live" toxin, so the individual may make their own defenses. Ex: snake venom   Passive, Artificial Acquired Immunity  
Part of Lymphatic system in cervical region. Will swell in reaction to head congestion, sinusitis and ear infections. Can block air passage if swollen large enough.   Tonsils  
Organ that contains lymphoid tissue in its walls. Located at the end of the colon.   Appendix  


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