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Example Questions
Example Question #1 : Help With Other Innate Immunity Physiology
Leukocytopenia is defined as which of the following?
Abnormally low platelet counts
Abnormally low red blood cell counts
Abnormally high white blood cell counts
Abnormally low white blood cell counts
Abnormally low white blood cell counts
The suffix "-penia" in medical terminology is used to signify a deficiency. This means that the amount is abnormally low. The prefix "leuko-" can also be found in the word leukocytes, which is another word for white blood cells. As a result, leukocytopenia means abnormally low white blood cell levels.
Erythropenia is a condition in which erythrocyte counts (red blood cells) are low.
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
Skin
Stomach acid
Neutrophils
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 #3 : Help With Other Innate Immunity Physiology
Which of the following does not limit bacterial growth?
Increased nutrient availability
Decreased nutrient availability
Immune response
Bacterial cell density
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?
Saliva
Skin
Tears
Antibodies
Stomach acid
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).
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