How does the body respond to pathogens?

Antibodies

Explanation:

The immune system works extremely hard to fight off the pathogen. Your body throughout the years of getting viruses and other things that make you sick, creates antibodies from the virus. It takes a little peice of the virus like a puzzle peice , so it can block it from coming into the body again. It does not always work as there are many stains of viruses and the body does not perform this perfectly.

can you list the selections

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.