Bacteria Virus Immune System

Defenses Against Bacteria

the Human Body Fights Back

Open Ended

What were the 6 defenses the body has against bacterial infections?

7) The Immune System

• The immune system is made up of special organs, cells and chemicals that fight infection

• The main parts of the immune system are: white blood cells, antibodies, the lymphatic system, the spleen, the thymus, and the bone marrow.

How Does the Immune System Fight Bacteria?

• The body reacts to disease-causing bacteria by increasing local blood flow (inflammation)

• Sends white blood cells to attack and destroy the bacteria.

• Antibodies produced attach to the bacteria and help in their destruction and prevent new infections

Multiple Select

Pathogens are...

• Foreign substances that attack the body.

• White blood cells that attack foreign substances that enter the body.

• A type of internal defense mechanism in the immune system.

• Proteins that cause disease.

Multiple Choice

What happens after the second time you are exposed to a pathogen?

• The body will not be able to fight off the pathogen quickly, because it knows how to get into the body easier.

• The body's immune system will react the same was as it did during the first exposure.

• The body can only be exposed to a pathogen a second time if you do not have a vaccine.

• The body will know how to fight off the pathogen quickly, because memory cells have been created after the first encounter.

Multiple Select

Which of the following are considered internal defenses? (there may be more than one correct answer)

• Mucus

• Inflammation

• Tears

• Hair

• Tcells

Open Ended

What do you think it means to be immuno-compromised?

Multiple Select

Of the following check all types of people that may have weak immune systems

• Babies

• Youth and Young Adults

• the Elderly

• Cancer Patients

• Diabetics