A companyâs inventory turnover ratio refers to how quickly goods enter and leave storage at the business. Itâs most often used in relation to companies that deal in perishable goods, such as foodstuffs, or high-demand retail items. Itâs easy to calculate in theory, but itâs not always easy to interpret.
The retina is the light-sensitive layer at the back of the eye that is responsible for vision. Blood circulation to most of the retina's surface is primarily through one artery and one vein. If either blood vessel or one of their smaller branches is blocked, blood circulation to the retina can be significantly disrupted. The blockage is called an occlusion.
Ischemia can also occur in the arteries of the brain, where blockages can lead to a stroke. About 80-85% of all strokes are ischemic. Most blockages in the cerebral arteries are due to a blood clot, often in an artery narrowed by plaque. Sometimes, a blood clot in the heart or aorta travels to a cerebral artery.oronary artery disease â A narrowing or blockage, due to atherosclerosis, of the arteries that provide oxygen and nutrients to the heart. When blood flow is cut-off, the result is a heart attack.