Chp 16 Quiz 3

Which of the following is not a function of the lymphatic system?

• Returning interstitial fluid to the bloodstream.

• Transporting oxygen-poor blood back to the venous system.

• Transporting the products of lipid digestion from the intestine to the liver.

• Protecting the body against infection.

If a vaccine is given to most people in a population, it can halt the spread of an infection because of__________.

• autoimmunity

• herd immunity

• innate immunity

• passive immunity

The thymus is in the mediastinum behind the sternum.

• True

• False

Which of the following best describes the primary function of lymphatic vessels?

• Draining excess interstitial fluid and returning it to the bloodstream

• Carrying nutrients to cells of the body

• Regulating body temperature

• Transporting oxygen to tissues

What is the ratio between the light and heavy chain amino acid structures in an antibody?

• One light chain and three identical heavy chains

• Two identical light chains and two identical heavy chains

• Three identical light chains and one heavy chain

• Four identical light chains and four identical heavy chains

The Epstein-Barr virus (EBV) is responsible for the infection known as mononucleosis. The virus attacks B lymphocytes and uses them to replicate itself. When the immune system manages to halt EBV production, the virus still remains dormant in infected B cells for the rest of the life of the host. In which of the following locations would you most likely find dormant EBV in a previously infected person?

• The hair

• The spleen

• The stomach

• The eyes

From the collecting ducts, lymph enters__________ and becomes part of the__________.

• capillaries; blood supply

• veins; plasma

• lymphatic trunks; interstital fluid

• lymph nodes; tissue fluid

Autoimmune diseases are more common in older people.

• True

• False

A patient with Crohn's disease and has been given the drug called Humira®. Their doctor told them that it is a monoclonal antibody. What does this mean?

• The drug is a cocktail of many types of antibodies.

• The drug is a cocktail of many types of antigens.

• The drug consists of a single type of antibody.

• The drug consists of a single type of antigen.

What feature of the spleen allows it to perform its function?

• The highly permeable venous sinuses within the spleen allow blood to pass into the red pulp where it is filtered.

• The close proximity of lymphatic vessels to the venous sinuses allows lymph to return to the blood stream.

• The splenic nodules of the white pulp are a site for production and maturation of lymphocytes.

• A large number of lymphatic vessels enter the spleen at the hilum, so that lymph can be filtered.