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Lymphatic System ch 15

QuestionAnswer
The Lymphatic System is: tissues and vesels scattered througout the body services almost all regions directly
Functions of Lymphatic system: Fluid balance protection from infection absorption of fats
Fluid balance and lymphatic circultion return: isf& proteins to the cardiosvascular system.
Fluid balance and circulation is: a one way system that begins in the tissues and ends when lymph joins the blood.
Where does lymph originate? ISF which comes from blood plasma.
Lymphatic capillaries are what: excess ISF that are blind ended, have one way valves and have large gaps between cells
Lymphatic vessels are what: superficial deep sets that have thin walls which have valves that prevent backflow &lymph nodes situated along them.
Lymphatic trunks are: Lymphatic vessels that join to form different body regions
Lymphatic Ducts have: Two main channels that drain lymph into venous blood.
Right Lymphatic duct receives lymph from: upper right side of body and empties into right subclavian vein.
Left Lymphatic (thoracic) duct receives lymph begins @: Cisterna Chyli (storage pouch)
Left lymphatic (thoracic) ducts receives lymph from: LEFT SIDE & ENTIRE LOWER BODY AND EMPTIES INTO LEFT SUBCLAVIAN VEIN.
segments of lymph vessels between valves: contract rythmically.
Contraction rate of lymph is: related to fluid volume.volume increases, & creates more of a rapid contraction.
Lymphoid Tissue is: Distributed throughout the body
Lymphoid tissue makes up: specialized organs: lymph nodes, thmus, spleen and tonsils
Where is the thymus located Located in the medianstinum-a space inbetween the heart and lungs.
function of the thymus? T-cell maturation. Plays a key role in immune system developement before birth and during infancy.
What is the function of the lymph nodes? To filter lymph.
Why are there so many lymph nodes located around the body's core? To filter lymph.
Why are there so many lymph nodes located around the head/neck? to protect anything inhaled or taken into the body that is harmful.
what are the four functions of the spleen? 1. filter blood 2. destroy worn out or defective blood cells 3. produces RBC before birth 4. Resevior for blood
What would happen if a person had their spleen removed? You can survive but are more susceptible to infection.
what is MALT? MUCOSA ASSOCIATED LYMPHOID TISSUE
Where is MALT found? mucous membranes lining digestive, respiratory & urogenital tracts.
Tonsils are: Masses of lymphoid tissue located in pharynx (throat)
Tonsils function is to: Remove contaminants from inhaled or swallowed materials.
Other lymphoid tissue: Appendex-Fingerlike tube of lyphatic tissue attached to large intestine
what is a PATHOGEN? Any disease causing organism (virus, bacteria, fungus, parasite)
what is an ANTOGEN? Antibody generating subtance that causes the production of antibodies
what is PORTAL OF ENTRY? How pathogens enter the body (mouth, gi tract, respiratory tract)
what is VIRULENCE? Strength of a pathogen
what is DOSE? Quantity of a substance an organism is exposed to-beyond a certain threshol, we get sick.
Innate Immunity is: Present at birth- provides immediate & general protection against pathogens
Adaptive Immunity is: (SPECIFIC IMMUNITY) ability of the body to defend itself against specific invading agents such as bacteria, toxins, viruses, and foreign tissues.
what are phagocytes? Engulf foreign substances & destory it.
what are natural killer cells? Bind to infected body cells and release an enzyme that destroys abnormal cells.
what are the symptoms of inflamation? 1. redness 2. heat 3. swelling 4. pain
How is inflammation beneficial for fighting infection? prevents spread of pathogens, dispose of debris & pathogens and set the stage for repair to bring blood back to the area.
How does fever aid in the immune respone? Stimulates phagocytes and increases metabolism and decreases organisms ability to multiply.
What are 2 highly specialized functions of ADAPTIVE IMMUNITY? 1. Systemically attack specific pathogens 2. Remembers pathogens after inital exposure
What are 2 types of Immune Responses for Adaptive Immunity? 1. Cell mediated Immune Respones 2. Antibody-mediated immune Response
Cell-mediated immune respones are? T-cells and cells attacking infected cells
Antibody-mediated immune Responses are? Carried out by B cells Antibodys bind to and inactivate antigens
How is adaptive immunity different from nonspecific defenses? Immune Responss are specific for particular foreign molecule and Immune responses have memory for most previously encountered foreign molecules.
Where do B cells originate? in the bone marrow and other lymphod tissue.
What do B cells provide defense against?? extracellular pathogens and destroy antigens with antibodies.
Where do T cells originate? thymus
What do T cells provide defense against? intercellular pathogens and destroy cells directly
what is a macrophage? Processing center for foreign antigens and ingests antigen then presets it to T-cells.
How does massage affect the lymphatic system? Provides mechanical movement of lymph fluid through one way valves of lymphatic vessels.
what causes hypersensititvity? food, drugs, venoums, pollen, dust, mold, cosmetics.
symptoms of anaphylaxsis? drop in blood pressure and interference with breathing
what causes autoimmune disorder? immune system fails to recognize self antigens and attacks the bodys own cells.
what is Edema? accumulation of fluid betweeen cells.
signs and symptoms of edema tissue is soft and puffy, hot if recent infection, cool if edema is related to poor circulation.
When is massage contraindicated for Edema? fluid retention, bed ridden w/o contrindicating conditions.
Created by: vslocum
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