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Exercise and the Immune System Exam
Study Guide
Immune System - Answers✔Innate and acquired
Innate Immune Systems - Answers✔Physical Barriers
Phagocytes
Natural Killer Cells
Physical Barriers - Answers✔Skin and mucosa
Phagocyte - Answers✔Engulf bacteria
Macrophages
-Located in tissues
-Produce cytokines that stimulate the immune response
Neutrophils
-Exit the blood to enter tissues
Natural Killer Cells - Answers✔Destroy viruses, bacteria, and cancer cells
Give off cytokines
Recognize cells that have marker on them
Complement System - Answers✔Attach to the surface of a foreign agent
Destroys bacteria by making a hole in the surface
Tags surface of bacteria
-Identifies it to phagocytes
Serves as chemoattractant
-Recruits other immune cells
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Inflammation - Answers✔Normal Part of the Immune Response
Acute and Chronic
Acute Inflammation - Answers✔In response to injury (cut on finger)
-Short term response
Vasodilation
-Due to bradykinins from phagocytes, macrophages, and neutrophils
Increased blood flow to injured area
-Causes edema (swelling)
Pain caused by kinins
Chronic Inflammation - Answers✔Due to persistent infection or prolonged immune response
Increased circulation of cytokines and c-reactive protein
High grade inflammation
-Certain cancers and rheumatoid arthritis
Low grade inflammation
-Due to obesity and aging
-Linked to increased risk of cancer, heart disease, diabetes, and Alzheimer's
Acquired Immune System - Answers✔Adaptive immune response
-Recognize and remember certain pathogens
Major cells
-B cells - B lymphocytes
-T cells - T lymphocytes
B Cells - Answers✔Secrete antibodies
Have loading docks that bind with specialized receptor
Antigens - Answers✔Stimulate the immune system to produce antibodies
Antibodies - Answers✔Also called immunoglobulins
Fight against foreign antigens
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