Defending Microorganisms Flashcards
What is the main function of the immune system?
To keep our body safe from pathogens
What are pathogens?
Bacteria, viruses, fungi, protozoa, and helminths and other foreign invaders including harmful materials originating from our cells
How many lines of defense and what are they?
3; physical barriers then phagocytic cells then specific immune system
What is the immune system’s activity based on?
Its ability to distinguish characteristic proteins or proteins linked components
What is another name for MHC?
Human leukocyte antigens
What does MHC stand for?
Major histocompatibility complex
What are the three different types of blood cells?
Erythrocytes, Platelets, and leukocytes
What are the different types of Leukocytes
Neutrophils, Eosinophils, Basophils, Lymphocytes, and Monocytes
What is secreted from basophils that promote mobility of other WBCs in the injured/ infected area?
Heparin
What do basophils release due to tissue damage?
histamine
Which leukocyte count increases in bacterial infection
Neutrophils
which leukocyte count increases during parasitic infection
Eosinophil
Which leukocyte increases during viral infection?
Lymphocytes
Which leukocytes are phagocytes?
Neutrophils, Eosinophils, Monocytes, and Macrophages (monocytes)
What causes a fever?
Pyrogen
