Objectives: Ch. 12 and 13 (host defenses) Describe the function of each immune system cell type and the lymphatic system Describe the nature and effectiveness of first-line barriers to infections Describe the cells and cellular processes of the second-line immune defenses Understand the principles of the acquired immune response Define the role and activation of the humoral response:B cells and antibodies (each class) Describe the role and process used by antigen presenting cells to activate the acquired immune response Describe the role of cytotoxic and helper T cells Describe how Complement is activated and how it functions to aid the immune response Define the goal of immunizations Describe the physical nature and usefulness of an immunotherapy Describe the physical nature and usefulness of vaccinations Know the current CDC recommended vaccinations for all U.S. children