Question

1. Antibodies that have only one structural unit (monomer) consist of ____ protein chains, connected by disulfide bonds.

1. two
2. three
3. four

2. _________ differentiate in the thymus.

1. T cells
2. C cells
3. B cells

3. The lymphatic system protects the body by removing foreign material such as bacteria from the lymphatic stream.

1. True
2. False

4. _________, which serves as filters for the lymphatic system, occur at various points along the lymphatic vessels.

1. Glands
2. Lymph nodes
3. Lymphatic vessels

5. Collecting lymphatic vessels have three tunics and equipped with valves like veins.

1. True
2. False

6. Three characteristics of the immune response are the ability to distinguish self from non-self, memory, and

1. autoimmunity
2. specificity
3. susceptibility

7. Antibodies are produced by plasma cells in response to antigens and are found in all body secretions.

1. True
2. False

8. Lymph is:

1. excess tissue fluid that has leaked out of the capillaries
2. excess tissue fluid that has escaped from arteries
3. excess blood that has escaped from veins

9. B cells mature in the:

1. thymus
2. red bone marrow
3. bloodstream

10. The following are lymphoid organs except:

1. pancreas
2. spleen
3. tonsil

11. The upper respiratory structures include the nose, the larynx, and the _____________.

1. epiglottis
2. lungs
3. pharynx

Answer 1