1. Acquired immunity that a fetus obtains from maternal antibodiesthat cross the placenta is called:

1. Artificially acquired natural immunity.
2. Naturally acquired passive immunity.
3. Naturally acquired active immunity.
4. Artificially acquired active immunity.

1. Which of the following are roles of the lymphatic system?

1. Filtering, recycling, and producing lymph.
2. Collecting surplus fluids.
3. Absorbing fat-soluble molecules from the digestive tract.
4. All of the above.

1. Which of the following cells plays a role in both specific andnon-specific defenses?

1. Neutrophils
2. Lymphocytes
3. Macrophages
4. Eosinophils

1. What are the small proteins that are secreted by virallyinfected cells that protect neighboring cells and thwart furthermultiplication of viruses?

1. Interferon
2. Interleukins
3. Heparin
4. Histamine

QUESTION 5

Which of the following cells is a phagocyte?

1. Neutrophils
2. Monocytes
3. Eosinophils
4. All of the above.

QUESTION 6

Phagocytosis refers to which immune system response?

1. Decreased synthesis and distribution of immunoglobulin E.
2. Increased synthesis and distribution of immunoglobulin E.
3. Engulfment of any fluid materials.
4. Engulfment of molecular materials.

QUESTION 7

Which of the following is NOT true regarding lymphaticcapillaries?

1. Lymphatic capillaries are the smallest lymphatic vessels.
2. Lymphatic capillaries are dead-end vessels.
3. Lymphatic capillaries are less porous than bloodcapillaries.
4. Lymphatic capillaries are more porous than bloodcapillaries.

QUESTION 8

Lymph flows:

1. Away from the heart only.
2. In a circular pattern within the tissues.
3. Into the capillaries.
4. Toward the heart only.

QUESTION 9

Which of the following is NOT an organ of the immune system?

1. Thymus
2. Spleen
3. Lymph Nodes
4. Esophagus

QUESTION 10

What is the purpose of a cytokine?

1. Digest pathogens
2. Engulf pathogens.
3. Increase body temperature.
4. Recruit immune cells.

QUESTION 11

The lining of the gastrointestinal tract are an example of whattype of immune system defense?

1. Non-Specific
2. Pre-Determined
3. Specific
4. Spontaneous

QUESTION 12

Where are immune cells synthesized?

1. The liver.
2. The spleen.
3. The bone marrow.
4. The pancreas.

QUESTION 13

What are the proteins released by leukocytes to recruit otherimmune cells and regulate the immune response?

1. Interferon
2. Interleukins
3. Cytokines
4. Lymph

QUESTION 14

Specialized lymphatic capillaries that project into the smallintestines are called:

1. Chyle
2. Lacteals
3. Lymphatic Trunks
4. Collecting Vessels

QUESTION 15

Which of the following is not a splenic function?

1. Destroy old blood cells.
2. Produce new blood cells.
3. Monitor blood flow.
4. Filter blood cells.