Fungal infections can be acquired by inhalation, ingestion, or through the skin (for example, through a cut or wound). Some fungal infections can cause disease in otherwise healthy animals, while others require a host that is sick, weakened, or immunocompromised to establish infection.
The heart is at the center of your circulatory system, which is a network of blood vessels that delivers blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. Your heart is a muscle, and its job is to pump blood throughout your circulatory system.
The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body. Blood travels through your heart and lungs in four steps: 1  The right atrium receives oxygen-poor blood from the body and pumps it through the tricuspid valve to the right ventricle. 2  The right ventricle pumps the oxygen-poor blood through the pulmonary valve to the lungs.