Concept explainers
To label: The components in the following diagram that shows a helper T cell is activated by interaction with an antigen-presenting cell and the helper T cell's central role in activating both humoral and cell-mediated immunities.
Introduction: The immune system plays an important role in the human body. It protects the body from the invading organisms. The immune system is classified into two types namely the innate immune system and adaptive immune system. The innate immune system starts its action from the time of birth whereas the adaptive immune system starts its action in the later stages of life when exposed to antigens for the first time. The adaptive immune system is divided into two types namely humoral immunity and cell-mediated immunity.
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Study Guide for Campbell Biology
- Match the immunity concept with the best description. ___anaphylactic shock a. recognizes antigen ___immune memory b. inadequate immune response ___autoimmunity c general defense mechanism ___inflammation d. immune response against ones own body ___immune deficiency e. secondary response ___antigen receptor f. acute allergic reaction ___antigen processing g. presenting antigen together with MHC markersarrow_forwardThe Adaptive Immune Response Is a Specific Defense Against Infection Name the class of molecules that includes antibodies, and name the five groups that make up this class.arrow_forwardWhich of the following is not a part of innate immunity? a. phagocytic cells e. inflammation b. fever f. complement activation c. histamines g. presenting antigen d. cytokines h. all take partarrow_forward
- The Adaptive Immune Response Is a Specific Defense Against Infection Identify the components of cellular immunity, and define their roles in the immune response.arrow_forwardThe Adaptive Immune Response Is a Specific Defense Against Infection Compare the general inflammatory response, the complement system, and the specific immune response.arrow_forwardFigure 42.11 Which of the following statements about T cells is false? Helper T cells release cytokines while cytotoxic T cells kill the infected cell. Helper T cells are CD4+, while cytotoxic T cells are CD8+. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. The T cell receptor is found on both CD4+ and CD8+ T cells.arrow_forward
- Match the immune cell with its main function. ___dendritic cell a. professional phagocyte ___B cell b. antigen-presenter ___helper T cell c. activates other lymphocytes ___NK cell d. makes antibodies ___macrophage e. kills ailing body cells that lack MHC markersarrow_forwardDistinguish between a. neutrophil and macrophage b. cytotoxic T cell and natural killer cell c. effector cell and memory cell d. antigen and antibodyarrow_forwardHow do B and T cells differ with respect to antigens that they bind?arrow_forward
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