Exam 22: The Lymphatic System and Immunity

A substance that provokes an immune response is called a(n)________.

When an antibody binds to its specific antigen a(n)________ is formed.

Most of the lymph returns to the venous circulation by way of the

Various types of macrophages are derived from

Examples of physical barriers against pathogens include

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

A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody.This fluid is probably

The various classes of immunoglobulins are differentiated on the basis of their

Each of the following is a physical barrier to infection,except

The portions of an antigen to which antibodies bind are the ________.

In passive immunization,the

An infection and inflammation of the aggregated lymphatic nodules in the pharynx is termed ________.

Figure 22-1 The Structure of a Lymph Node Use Figure 22-1 to answer the following question: -Identify the structure labeled "3."

The merging of ________ forms the right lymphatic duct.

Histamine increases blood flow and vascular permeability.This would account for all of the following changes that occur during inflammation,except

Which class of leukocytes is particularly abundant in the red pulp of the spleen?

The medullary cords of a lymph node contain ________ lymphocytes and plasma cells.

Lymphocytes may be found in which of the following tissues or organs?

The process by which antibodies bind to antigenic sites on viruses or toxins,rendering them incapable of binding to other cells,is called ________.

A(n)________ is an antigen with at least two antigenic determinant sites.