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.
All of these conditions have some effect on the heart or the blood vessels that supply the heart. Itâs certainly possible to have several types of heart disease at the same time, which can make it difficult to think of these conditions as separate. The fact that the heart is part of the circulatory system means that disease in one part of the system will have an affect on how all parts work.