The immune system.
The immune system acts as a defense system of the body. It fights against bacteria, viruses and any other disease causing pathogens. Some chemicals can weaken the immune system and make them vulnerable.
It would be epithelial tissue that covers it.
Explanation:
A person that is Hyperglycemia has a high blood pressure causing problems, iv help maintain people blood sugar if u use a normal iv it might cause a high blood pressure can cause blood clot to form in your arteries leading to the brain blocking blood flow causing a stroke. I hope this helps
The order of levels of organization from smallest to largest is Specialized Cells, Cardiac Muscle, Heart.