A Walking, Talking Water Balloon
Waste Molecule
Glucose Molecule
Vasculature of Head of Penis Damaged by Diabetes
Baby Crawling Showing Skeletal System
Female Pelvis Showing Erect Clitoris
Brain Gray Matter
BDNF (Brain Derived Neurotrophic Factor)
Vertebrae Revealing Pain Receptor
Vessels of the Lower Extremities
Brain Imaging
Mast Cell
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Fats Within the Bloodstream
Bloodstream is the blood flowing through the circulatory system. Blood is watery, and cholesterol is fatty. Just like oil and water, the two do not mix. To travel in the bloodstream, cholesterol is carried in small packages called lipoproteins. Too much cholesterol in the blood, or high blood cholesterol, can be serious. People with high blood cholesterol have a greater chance of getting heart disease. High blood cholesterol on its own does not cause symptoms, so many people are unaware that their cholesterol level is too high.