Exam 51: The Immune System

What are the source of antibody-producing cells?

What molecules are released by activated helper T cells?

The surface defenses of the body consist of the ______ and the mucous membranes lining the digestive and respiratory tracts.

In the old days, milkmaids were exposed to cowpox from milking the cows, and this fortuitously gave them some protection from smallpox.What was happening in the milkmaids?

In the humoral response, some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells? I-Some of the B cells become plasma cells that secrete antibodies.II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.

Unless rare antigens are present ideally, a patient needing a transfusion will receive blood of the identical blood type.But in an emergency, what blood type can be given in a transfusion to anyone?

Where are MHC_II cell surface proteins found?

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.Where would you expect these proteins to be expressed?

Which of the following describes passive immunity?

Which cells produce specific antibodies?

What is the blood type of individuals who lack antigens on their red blood cell surfaces?

The cell-mediated immune response is brought about by which cells?

What would happen to immunoglobulin genes if alternative mRNA splicing was nonfunctional?

Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination.What is the likely outcome of a deletion of the Rag genes?

Which mechanism allows certain viral pathogens to evade the vertebrate immune system?

A patient has come to you for a second opinion."I have these mysterious lumps in my right armpit," he says, "The other doctor says we may have to remove them.What do you think?" You notice red scratches on the patient's right arm."You must have a new kitten.Cat scratch disease, from the bacterium Bartonella ," you say, "And we certainly won't remove those lumps, they are really important! Those are your..."

Select the correct statement regarding the temperature response of the immune system.

What is another term for allergy?

You sit next to Uncle Ed, an immunologist, at Thanksgiving dinner."I'm a 'big eater'", he says, "just like the cells I study." What are the large cells that engulf pathogens that Uncle Ed works with?