Exam 22: The Lymphatic System and Immunity

The following are steps in the cell-mediated immune response.What is the correct sequence for these steps? 1)Several cycles of mitosis occur. 2)Antigen is engulfed and presented by a macrophage. 3)Cytotoxic T cells migrate to focus of infection. 4)T cells with specific receptors recognize the antigen. 5)T cells differentiate into cytotoxic T cells or T memory cells. 6)Cytotoxic T cells release perforin and/or lymphotoxin.

Changes in the immune system that accompany aging include all of the following except

The process by which the surface of a microorganism is covered with antibodies and complement,rendering it more likely to be phagocytized,is called

Leslie has a severe sore throat and the lymph nodes in her neck are swollen.This would indicate that

The letters HIV stand for

Lymphatic vessels are located in almost all portions of the body except the

During a primary humoral response to antigens all of the following occur except

All of the following are true of the secondary response of humoral immunity except that it

Figure 22-1 The Structure of a Lymph Node Use Figure 22-1 to answer the following questions: -Identify the dominant cell type in the area labeled "6."

An accumulation of lymph in a region where lymphatic drainage has been blocked is called

Compared to blood capillaries,lymph capillaries exhibit all of the following except that they

The role of antigen-presenting cells in immunity is to

Infection with the HIV virus occurs through

Microphages include

Lymphatic capillaries are known for

The term ________ refers to antibodies found in body fluids.

Lymphocyte production and maturation involves

If the disulfide bonds in IgG were broken,how many peptide chains would be set free?

An infection and inflammation of the aggregated lymphatic nodules in the pharynx is called

Areas of the spleen that contain large aggregations of lymphocytes are known as