Which of the following is true about the immune system? Check all that apoply. Rejecting  organs or bone marrow transplantation is the normal function of the immune system Overreaction of the immune system to cause allergy or causing autoimmune diseases is normal function of the immune system Immune system discriminates between self and non-self Immune system eliminates infectious agents but not cancer from the human body Eliminating infectious agents and cancer are the normal functions of the immune system

The natural tendency of immune systems to lose their effectiveness in older people is called ___. It is not a disease by itself, but allows illness to occur more often with slower recovery.     immunosuppression     tetany     anergy     eulogy

Which of the following would produce the most severe immunocompromised condition? Clogged arteries reduce the efficiency with which cells can move throughout the body A virus attacks mast cells, so that they are not able to release signaling factors when they encounter pathogens A mutation in the gene that controls keratin synthesis produces extremely brittle hair, both inside & outside the body Severe burns damaged multiple layers of the skin, so secretions of mucus, sweat & oil are all significant lower than normal None of these conditions affect the immune system

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

(>1 ans) Which of the following are true CD4+ T cell count is used to monitor immune system function in HIV-positive people AIDS patients have an increased risk of developing various cancers HIV-1 infection causes immune deficiencies The most clinically important retrovirus is HIV-1 HIV-1 is an enveloped virus

This is the type of cell which produces antibody in response to infection.     liver cell     thymus     memory T cell     B-cell or plasma cell

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

Attenuated agents may induce immunity after a single dose may cause disease in immunocompromised (sick) individuals multiply in the body may revert or mutate to disease-causing strains all of the above