Venule: Structure, Function & Diseases

Venules are the postcapillary blood vessels that connect directly to the capillary bed, where the exchange of substances between blood and surrounding tissues takes place. They are already visible to the naked eye and represent the beginning of the venous vascular system that transports blood back to the heart. Unlike the larger veins into which … Venule: Structure, Function & Diseases

High Density Lipoproteins: Function & Diseases

High density lipoproteins represent one of several classes of transport molecules that carry cholesterol esters and other lipophilic substances in blood plasma. HDLs handle the transport of excess cholesterol from tissues to the liver. In contrast to low-density lipoproteins, which are responsible for the opposite transport of cholesterol, HDLs are also called “good” cholesterols because, … High Density Lipoproteins: Function & Diseases