Term
| What does the lymphatic system do? |
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Definition
| Recovers tissue fluid, identifies foreign agents, activates immunie response, returns fluid to bloodstream |
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Term
| What are the major functions of the lymphatic system (3)? |
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Definition
| Fluid recovery, immunity, lipid absorption |
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Term
| Name four lymphatic organs. |
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Definition
| Lymph nodes, tonsils, thymus, spleen |
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Term
| Name two characteristics of lymph fluid. |
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Definition
| Clear, colorless, less protein than plasma |
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Term
| In order of small to large, name the lymphatic vessels. |
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Definition
| Lymphatic capillaries, Collecting vessels, lymphatic trunks, collecting ducts |
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Term
| Where does lymph enter the bloodstream? |
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Definition
|
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Term
| Lymphatic capillares are similar to blood capilaries except for this major difference: |
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Definition
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Term
| What is the mechanism of lymph flow (4 items)? |
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Definition
| Flows at low pressure and speed, moved along by rhythmic contractions of lymphatic vessels, valves prevent backward flow, flow aided by skeletal muscle pump |
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Term
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Definition
| Swelling of tissue from swolen lymph vessels |
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Term
| Lymphocytes represent what percentage of circulating WBCs? |
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Definition
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Term
| What are the three types of lymphocytes? |
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Definition
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Term
| What type immunited do T cell provide? |
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Definition
|
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Term
| What are the three types of T cells? |
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Definition
| Cytotoxic, Helper T cells, Supressor T cess. |
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Term
| What are the majority of Lymphocytes? |
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Definition
|
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Term
| What type of immunity do B Lymphocytes give us? |
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Definition
| Antibody mediated immunity |
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Term
| NK T cells give us what type of immunity? |
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Definition
| Immunological surveillance |
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Term
|
Definition
| alert immune system of foreign presence (in mucous membranes) |
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Term
| Reticular cells in lymph organs and thymus help with? |
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Definition
| phagocytosis and provide structure |
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Term
| Where does lymphopoiesis occur? |
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Definition
| Bone marrow, spleen, lymus, peripheral lymphoid tissue |
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Term
| Are lymphatic organs well defined? |
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Definition
|
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Term
| What is the primary lymphatic organ? |
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Definition
|
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Term
| What are the secondary lymphatic organs? |
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Definition
|
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Term
| What organ fileter lymph? |
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Definition
|
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Term
| The lymph node is the site for _______ and _______ cell activation? |
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Definition
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Term
| What are the three main functions of the spleen? |
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Definition
| Filters blood, Initiation of immune response, Blood reservoir, (also RBC disposal, blood cell production in fetus) |
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Term
| In the spleen, what are the functions of the red pulp? |
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Definition
| Sunuses contain RBCs, Very permeable to allow RBC re-aborbtion, RBC graveyard |
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Term
| In the spleen, what is in the white pulp and what does it do? |
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Definition
| Has sleeves of lyphoctes and macrophages, monitor blood for foreign agents. |
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Term
| what are the patches of lymphatic tissue at the pharynx entrance called? |
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Definition
|
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Term
| What are the functions of tonsils? |
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Definition
| Guards against inhaled and injested pathogens |
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Term
| What are the five tonsils? |
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Definition
| 2 palatine, 2 lingual, 1 pharyngeal |
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Term
| The thymus is part of what two systems? |
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Definition
|
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Term
| What are two functions of the Thymus? |
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Definition
| House developing lymphocytes, secretes hormones that regulate lymphocytes |
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Term
| What type of barrier does the cortex of the thymus have? |
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Definition
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Term
| The medulla of the thymus is made of what type of cells? |
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Definition
| Reticular epethelial cells |
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Term
| What is the second line of defense against pathogens and is it specific or non specific? |
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Definition
| WBC response, Inflamatory response. Non specific |
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Term
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Definition
| Small proteins secreted by activated WBCs when invaded by viruses.(a cytokine) |
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Term
| Why is inflamation a good thing? |
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Definition
| Limits spread of pathogens, initiates tissue repair, Removes foreign debris, protects from further injury |
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Term
| What are four signs of infection? |
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Definition
| Redness, Inflammation, Heat, Pain(actually a symptom) |
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Term
| How many proteins make up the complement system? |
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Definition
|
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Term
| What are the two pathways of the complement system? |
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Definition
|
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Term
| What is the most important function of C1 of the complement system? |
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Definition
| Activating C3 to become C3b |
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Term
| What does C3b of the complement system do? |
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Definition
| Attracts phagocytes, stimulates phagocytic activity, stimulation of inflamation |
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Term
| What is the difference between edema and effusion? |
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Definition
| Edema is swelling in tissue, Effusion is swelling in joints. |
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Term
| B and T lymphatic cells cannot work without? |
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Definition
|
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Term
| What are two classes of MHC proteins? |
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Definition
| Class I (produced by nucleated cells, class II (antigen presenting cells) |
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Term
| What does CD8 T cells do? |
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Definition
| binds to MHC to activate. |
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Term
| What enhances cytotoxic T cell maturation? |
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Definition
|
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Term
| What promotes B cell division? |
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Definition
|
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Term
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Definition
| enhances cytoxic maturation and promotes B cell division |
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Term
|
Definition
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Term
| What occurs in humoral immunity? |
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Definition
| B cell sensitation, b cell activation |
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Term
| The antigen/antibody complex does what four things? |
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Definition
| Neutralization, Agglutination, Precipitation, Complement activation |
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Term
| What are the two steps for cell mediated immunity? |
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Definition
| presentation, recognition |
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Term
| What are the two steps for humoral immunity? |
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Definition
| Sensitation, activation (B cell) |
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Term
| Primary immune response is? |
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Definition
| Activation from 1st exposure (peak in two weeks) |
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