Test 3 Immune System

Question 1

What are the two components of Adaptive/Specific Immunity?

Answer 1

• Cell-Mediated Immune system

- Humoral Immune System

Question 2

What Ab is a large pentamer produced by B lymphocytes & is first Ab to appear in response to initial exposure to Ag?

Answer 2

IgM

Question 3

This Ab serves as a marker for recent infection?

Answer 3

IgM

Question 4

What is defined by the formation of blood cellular components?

Answer 4

Hematopoiesis

Question 5

All cellular blood components are derived from?

Answer 5

Haematopoietic stem cells

Question 6

In a healthy adult approx. how many new blood cells are produced daily in order to maintain steady state levels in the peripheral circulation?

Answer 6

10^11 – 10^12

Question 7

What is the only Lymphocyte that participates in Class Switching?

Answer 7

B Lymphocytes

Question 8

What does Class Switching mean?

Answer 8

B Lymphocytes switch the kind of Ab molecules they produce from larger, less efficient IgM forms to smaller, more efficient IgG forms