The algae are simple photosynthetic plants that live in water. Most species are small to very tiny; many can only be seen with a microscope and often float or swim as plankton in the water column. But some algae--what we often call pond scum or seaweed--are conspicuous plants that can form dense mats of vegetation.
Circulatory System Diseases. Atherosclerosis â Literally, âhardening of the fatty stuff.â High fat diets can lead to formation of fatty plaques lining blood vessels. These fatty areas can become calcified and hard leading to arteriosclerosis, hardening of the arteries.
Heart failure occurs when the heart cannot pump enough blood to meet the bodyâs demands. And there are also diseases that directly affect the blood vessels of the body, such as peripheral artery disease. These are just a few of the many diseases that can affect the bodyâs circulatory system. SOURCES: Heart Foundation; American Heart Association; U.S. National Cancer Institute.