8.1 Structure of the Immune System

Question 1

What does the spleen house?

Answer 1

1. Blood storage
2. Activates B- cells which turn into plasma cells to produce antibodies.

Question 2

What is humoral immunity?
What is cell-mediated immunity?

Answer 2

Humoral- This includes antibodies that are secreted by WBCs and target specific antigens. B-cells

Cell-Mediated- T-Cells- coordinate immune system and directly kill virally infected cells.

Question 3

What do lymph nodes do?

Answer 3

It’s a component of the lymphatic system.
It’s a place for immune cells to communicate and mount an attack. B-cells can be activated here.

Other examples of lymph tissue include: GALT (gut-associated lymphoid tissue) & tonsils & Peyer’s patches in the small intestine and the appendix.

Question 4

In what two types of cells are leukocytes classified as?

Answer 4

Granulocytes: Neutrophils, eosinophils, basophils

Agranulocytes: monocytes, lymphocytes

Question 5

What do lymphocytes do?

Answer 5

They produce antibodies

Question 6

What do monocytes do?

Answer 6

They become macrophages.

They can be called microglia (CNS), Langerhans cells (skin), and osteoclasts (bone)

Question 7

What is the innate immunity?

Answer 7

Refers to the responses cells can carry out without learning

This is called the nonspecific immune response.

Question 8

In what two broad categories can you devide the specific immune system into?

Answer 8

1. Humoral immunity (B-cells & antibodies)
2. Cell mediated Immunity (T-cells)

Question 9

Answer 9