Questions -

Question 1 - What are the two major systems of immune response?

Innate and adaptive

humoral and cell-mediated

innate and non specific

physical barriers and chemical barriers

Question 2 - Our bodies have the capacity to make unique antibodies that can recognize billions of foreign antigens. Yet, we don't carry billions of unique genes to make these antibodies. It would completely overburden our cells to carry that many genes. Our immune cells have developed a clever trick to randomly generate these billions of antibodies through chromosomal rearrangement. Explain how the immunoglobulin genes are rearranged to generate billions of different antibodies.

HINT: Explain how the chromosome is rearranged to generate so many different variations.

The following series of 4 (3-6) questions deals with the function of the lymph nodes. Answer each as a separate question. More than one may be true.

Question 3 - Lymph nodes act like a filter in the kitchen sink to pull invading pathogens out of the lymph fluid and degrade them.

True

False

Question 4 - Lymph nodes act like a filter in the kitchen sink to pull invading pathogens out of the blood and degrade them.

True

False

Question 5 - Lymph nodes scan for invading pathogens: Macrophages can present antigens to B- and T-cells in the lymph node to warn them of invading pathogens in the nearby tissues.

True

False

Question 6 - Fluid that has passed through the lymph nodes will be delivered back to the blood through the thoracic duct.

True

False