MMSC 360 Exam 1 (A+ Graded Already)

immunity correct answers all physiologic mechanisms that enable the host to recognize materials as foreign and to dispose of them with or without injury to its own tissues immunology correct answers the study of the host's reaction when foreign substances are introduced into the body -foreign substances don't have to be infectious agents i.e. transfusion rejection features of the immune response correct answers -recognition of self and non-self: during fetal development the body learns what is self so that it knows which cells are part of the body (sometimes immune system "forgets" and attacks self) -immunomodulation of the host to protect against infectious disease: battle between self and non-self cells or viruses -undesirable responses-allergies, transplant rejection, autoimmune disease: immune system mounts attack against non-self cell that is not life threatening, or mounts attack against self cells innate immune system correct answers -non specific, will react the same to all invaders, present at birth -consists of phagocytosis, complement proteins and inflammatory action of WBCs acquired immunity correct answers -occurs after birth (once exposed to agent), specific (responds only to invaders that have been experienced before) -humoral mediated immunity (HMI): antibodies which are found in body fluids -cell mediated immunity (CMI): types of phagocytic cells and cells that are able to kill non-self cells humoral mediated immunity (HMI/ antibody-mediated immunity) correct answers -part of the acquired immune response that defends against extracellular bacterial infections outside of our own cells -cell types: B lymphocytes (B cells) which mature into plasma cells -mechanism is antibody mediated cell mediated immunity (CMI) correct answers -part of acquired immune response that defends against viral, fungal, intracellular organisms, tumors and causes graft rejection -cell types: T lymphocytes (T cells) and macrophages -mechanism is cell mediated by direct cell to cell contact OR by production of lymphokines lymphokines correct answers molecules that activate other cells characteristics of acquired immune response correct answers -recognition: distinguishing self from non-self -specificity: targets only the substance that induces the reaction -memory: second exposure leads to a stronger and quicker response due to creation of memory cells