Biol 273 Winter 2013
Biol 273 – Unit 6 Study Questions
Overview of the Immune System
Name the primary and secondary lymphoid tissues. Describe the encapsulated and diffuse lymphoid tissues.
How do immune cells end up in the blood? in lymph nodes?
Explain and give representative cell types, where possible:
phagocytes cytotoxicity antigen presentation / antigen-presenting cell (APC)
Describe the following immune cell types - their relative abundance, location in the body, role(s) in the immune
system: neutrophils, monocytes/macrophages, lymphocytes
What is the difference between innate and acquired / adaptive immunity? Humoral versus cellular immunity?
In what way are ‘professional’ phagocytes different from other cells?
What are chemotaxins? What cells release them, and what cells respond to them? What are opsonins? Why do
sites of bacterial infection develop pus?
What cells contribute to the inflammatory response? What are acute phase proteins?
Which cytokine plays a key role in initiating an inflammatory response? List four actions of this cytokine.
What results in the redness and swelling characteristic of inflammation?
What is the complement system? What role does it play in inflammation?
Acquired Immunity: Antigen-Specific Responses
Compare / contrast acquired versus innate immunity.
Which immune cells primarily mediate the acquired response?