They carry oxygen throughout the body

They are the first responders to damage of the body

These vessels carry blood and oxygen from the heart to the rest of the body

This line of defense does not involve blood

These pump blood out of the heart

They play a key role in clotting blood

They release toxins to kill parasites

They return blood back to the heart

This response involves B cells creating plasma and memory cells

This is the largest blood vessel in the body

They defend the body against infectious disease and foreign material

They help with inflammatory responses when tissue is damaged

They are small vessels that infiltrate nearly every organ and tissue in the body

This response involves many types of T cells

This is a cluster of tissue that separates the left and right side of the heart

They are White Blood Cells that kill foreign bacteria by the process of phagocytosis

They are involved with cleaning up at the end of an inflammatory response

The blood that normally flows through this vessel is normally oxygenated

This response involves White Blood Cells that work together to seek and destroy disease causing organisms or substances

This prevents back flow and keeps the blood going in the right direction

They are involved in allergic reactions

They produce antibodies and perform both antibody-mediated and cell-mediated resistance

There are three types of this vessel; Continuous, Fenestrated, and Sinusoidal

Plasma cells develop into antibodies in this line of defense

This receives blood that is pumped into ventricles