Anthrax is caused by a spore-forming bacteria and most commonly occurs in wild and domestic herbivore mammals. It's rare to find infected animals in the United States. People can become infected with anthrax by handling products from infected animals or by breathing in anthrax spores from infected animal products such as wool, hides, leather, or hair. Rare cases of inhalational, cutaneous (skin), and gastrointestinal anthrax have been connected to contaminated imported animal hide drums. Gastrointestinal anthrax can occur after eating undercooked meat from infected animals. Anthrax can also be used as a weapon. This occurred in the United States in 2001 when letters containing anthrax spores were sent through the postal system.
Capillaries in the skin are more specialized to release heat from the body while capillaries in muscles are specialized to carry and release large amounts of oxygen
An example of a system would be the circulatory system helps circulate blood carrying nutrients to organs and waste material away from organs. It includes the organs - heart, blood vessels and lungs.
