Ch 43 - Chapter 43 The immune system Understand the...

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Chapter 43 The immune system Understand the different levels of body’s response and which are specific Understand the differences between humoral and cell-mediated responses Know the role of B and T cells and why secondary infections are handled faster Know how the immune system is involved with AIDS, auto-immune diseases, viral diseases, cancer and allergies Figure 43.2 An overview of the body's defenses Figure 43.4 Phagocytosis by a macrophage Figure 43.5 The lymphatic system Body’s defense system 1) Surface coverings (integument, parasite cuticle) 2) Non-specific cellular responses 0. Interferon attacks viruses 1. Complement system attacks bacteria 2. Damaged cells produce histamine which causes 0. vasodilation 1. increased immune response, 2. more WBC’s to site 3. inflamation 3) Natural killer cells attack viruses by apoptosis Figure 43.6 A simplified view of the inflammatory response Invertebrate immune systems Sea stars have ameboid like phagocytes Insect blood cells (hemocytes) phagocytize and secrete antimicrobial peptides Invertebrates lack WBC’s and acquired immunity, although they can recognize self
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This note was uploaded on 12/02/2009 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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Ch 43 - Chapter 43 The immune system Understand the...

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