Your body's three lines of defence against infection

A combination of body defenses made up of cells, tissues, and organs that fight off pathogens and disease

• Lymphatic System

• Lymphocytes

• vaccine

• inflammation

• immune system

A preparation of dead or weakened pathogens that is introduced into the body to cause an immune response.

• Lymphatic System

• Lymphocytes

• vaccine

• inflammation

• immune system

The body’s response to injury or disease, resulting in a condition of swelling, pain, heat, and redness

• Lymphatic System

• Lymphocytes

• vaccine

• inflammation

• immune system

A secondary circulation system that helps the body fight pathogens and maintain its fluid balance

• Lymphatic System

• Lymphocytes

• vaccine

• inflammation

• immune system

The white blood cells in the lymphatic system

• Lymphatic System

• Lymphocytes

• vaccine

• inflammation

• immune system

__________________________ is your body’s ability to resist the germs that cause a particular disease.

• Antigen

• immunity

• specific response

• fever

• antibodies

Having a(n) __________________________ makes it harder for pathogens to reproduce and results in the body producing more white blood cells to destroy pathogens.

• Antigen

• immunity

• specific response

• fever

• antibodies

__________________________ are proteins that attach to antigens, keeping them from harming the body.

• Antigen

• immunity

• specific response

• fever

• antibodies

A(n) __________________________ is any substance released by invading pathogens.

• Antigen

• immunity

• specific response

• fever

• antibodies

Since the body recognizes pathogens that it has already fought, it creates a(n) __________________________ with cells ready to attack when those pathogens appear again.

• Antigen

• immunity

• specific response

• fever

• antibodies