PoetrySoup is a great resource for examples of calligram poems or a list of calligram poetry. These examples illustrate what calligram poems look like. There is also a link below to the definition of calligram and a page where you can discuss these types of poems.
The systemic circulation is the portion of the circulatory system is the network of veins, arteries and blood vessels that transports blood from heart, services the body's cells and then re-enters the heart, the Mayo Clinic noted.
The heart lies at the center of the circulatory system, functionally speaking, and is responsible for circulating blood throughout the body. Since cells depend on blood supply to receive nutrients and oxygen, heart disease that affects the function of the circulatory system can be quite dangerous. There are a number of effects that heart disease can have on the circulatory system itself.