Which if the following statements regarding the differentiation of self vs. non-self by the immune system is CORRECT?   - Failure to differentiate self vs. non-self can lead to autoimmune disease   - Differentiation of self vs. non-self is key to recognizing the presence of an infection   - Differentiation of self vs. non-self is key to mounting an immune response against infections and not against host tissues   - All of the above statements are correct

The innate immunity system clears about what percentage of the invading pathogens? 0.90% 50% 0 10% 0 1%

Which of the following occurs during an active immunization? A preparation of a specific antigen is provided to a patient to induce immunity by forming effector and memory cells. Effector and memory cells do not form. A preparation of antibodies is provided to an individual who was already exposed to a lethal agent.

An infant with recurrent bacterial and fungal infections is suspected to have an immunodeficiency disease. Within two days after exposure to a pathogen, the organisms have proliferated to dangerous levels requiring immediate systemic antibiotic treatment. It is unlikely that this infant has a defect in B or T lymphocyte responses to the infection because Systemic infections of bacteria and fungi are usually cleared by the spleen Adaptive immune responses require dendritic cells to take up and degrade pathogens O Bacteria and fungi are not efficiently transported to draining lymph nodes to initiate adaptive immune 'responses O The defective immune response occurs too rapidly following infection to be due to a defect in B or T lymphocytes responses

Place the event from first to last

Where would you expect to find activated T cells and B cells? Group of answer choices Mainly in bone marrow Only in lymph nodes and the spleen In blood, lymph, or infected / damaged tissues Mainly in the thymus

Which of the following shows the highest phagocytic activity? NK cells Pmns involved in ADCC Tc cells Macrophages involved with a parasitic infection None of the above

Johnny has just been infected and needs your help in letting him know how his body is fighting the infection. To do so, describe how the innate and adaptive immune systems work together. You should address the following: 1. define adaptive and innate immunity; 2. Describe the role of natural killer cells (how do they work); 3. what are antigen presenting cells and what is their function, what are MHCs?; 4. describe the role of the complement system; 5. what is the role of interferons?; 6. How do helper T cells, cytotoxic T cells and B lymphocytes work make sure you address adaptive immunity memory?; 7. Define HIV, which cells do they attack and why do some individuals develop persistent lymphadenopathy (swollen or enlarged lymph nodes)?

A A person has a disease that has activated the first line of defense. Which of the following defense mechanisms would be activated in the first line of defense? O Innate immunity and the skin (dendritic cells) O Innate immunity and Complement System Adaptive immunity and Antibodies O Adaptive immunity and TLRS Question 4 There are two types of inflammatio O Acute MacBook Air