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Example Questions
Example Question #2 : Help With Other Innate Immunity Physiology
Which of the following is not an example of innate immunity in the body?
Plasma cells
Stomach acid
Neutrophils
Skin
Plasma cells
Innate immunity is a generalized defense system against invading pathogens and foreign materials. In other words, these defenses are already found in the body and do not need to see a pathogen before becoming present. Plasma cells arise from B-lymphocytes, and must interact with an antigen from a pathogen in order to proliferate in the body.
Skin, stomach acid, and granulocytes (such as neutrophils) are constant presences in the body that help defend against pathogens.
Example Question #55 : Immune Physiology
Which of the following does not limit bacterial growth?
Bacterial cell density
Immune response
Increased nutrient availability
Decreased nutrient availability
Increased nutrient availability
Increased nutrient availability would increase bacterial cell growth, while all the other answers decrease ability of bacteria to grow in culture.
Example Question #3 : Help With Other Innate Immunity Physiology
Which of the following is not a part of innate immunity?
Antibodies
Stomach acid
Skin
Saliva
Tears
Antibodies
The immune system consists of two components, the innate (non-specific) and the adaptive (specific) arms. These components work together to prevent infection, clear established infections, and to protect against disease or foreign bodies. The innate (non-specific) system consists of barriers, the complement cascade, and other specialized cells. Barriers include saliva, tears, skin, mucous linings, stomach acid, and "good" gut bacteria (this outcompetes bad bacteria).