7. Immune System

The part of your immune system that keeps pathogens OUT are called

• barriers
• specific defenses
• non-specific defensis
• antibodies

A cell that eats invaders is called

• phagocyte
• B-cell
• T-cell
• plasma cell

The chemical that is released by your immune system to cause swelling is

• histamine
• interleukin
• antigen
• antibody

Anything that causes our immune system to attack it is called

• antigen
• pathogen
• antibody
• Mr. T cells

These cells will wipe out an invader the second time you are exposed to it

• memory cells
• B-Cells
• T-cells
• natural killer cells

This cell is the "boss" of the immune system, telling everyone what to do

• Helper T cell
• dendritic cell
• cytotoxic T cell
• plasma cell

This cell releases antibodies

• plasma cell
• cytotoxic T cell
• T cell
• B cell

This type of cell kills infected cells

• Cytotoxic T Cell
• plasma cell
• phagocyte
• memory cell

How do T-cells get activated?

• Phagocyte shows them what they ate
• bump into antigen
• bump into antibody
• thymus sends them out

The second layer of defense does NOT involve which of the following?

• antibodies
• swelling
• histamine release
• NK cells