eLearning Connection (See related pages) Concepts Questions Media Resources 14.1 Lymphatic System The lymphatic vessels form a one-way system, which transports lymph from the tissues and fat from the lacteals to certain cardiovascular veins. The lymphoid organs (red bone marrow, spleen, thymus, lymph nodes, and tonsils) play critical roles in defense mechanisms. 1. In what ways does the lymphatic system help to contribute to homeostasis? Answer 2. How do the lymph nodes and spleen participate in defending the body against disease? Answer Essential Study Partner Lymph System Lymph Movement Lymph Nodes Lymph Organs Art Quizzes Immune System Evolution Animation Quizzes Lymphatic System General Biology Weblinks Anatomy & Physiology Labeling Exercises Lymphatic System (33.0K) The Lymphoid Organs (29.0K) Thymus Gland (38.0K) Lymph Node (39.0K) Spleen (37.0K) Bone Marrow (37.0K) 14.2 Nonspecific Defenses Immunity consists of nonspecific and specific defenses to protect the body against disease. Nonspecific defenses consist of barriers to entry, the inflammatory reaction, natural killer cells, and protective proteins. 3. How do barriers to entry help keep us healthy? Answer 4. What is the role of neutrophils and macrophages in the inflammatory reaction? Answer Essential Study Partner Nonspecific Immunity Defense Mechanism Overview Animation Quizzes Phagocytic Cells Fever Complement Proteins Antiviral Defense Study Guides The Immune System: The First Line of Defense The Immune System: The Second Line of Defense 14.3 Specific Defenses Specific defenses require two types of lymphocytes: B lymphocytes and T lymphocytes. 5. What is an antigen? Answer 6. What are the targets of B lymphocytes and T lymphocytes? Answer Essential Study Partner Specific Immunity Lymphocytes Antibody-Mediated (Humoral) Immunity Cell Mediated Immunity Art Quiz Activation of T Cells Animation Quizzes Clonal Selection T-Cell Function Study Guide The Immune System: The Third Line of Defense 14.4 Induced Immunity Induced immunity for medical purposes involves the use of vaccines to achieve long-lasting (active) immunity and the use of antibodies to provide temporary (passive) immunity. 7. Why does active immunity last longer than passive immunity? Answer 8. What are monoclonal antibodies? Answer Art Quiz Monoclonal Antibody Production Animation Quizzes Vaccination Case Study AIDS Vaccine 14.5 Immunity Side Effects While immunity preserves life, it is also responsible for certain undesirable effects, such as allergies, blood type reactions, tissue rejection, and autoimmune diseases. 9. How do allergy shots help prevent the effects of allergic reactions? Answer Essential Study Partner Abnormalities Blood Groupings Art Quiz Allergic Reaction Animation Quizzes ABO Blood Types
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