Final answer:
An infarction is falsely described by the invasion of bacteria; it is accurately described by the loss of blood supply, resulting in dead tissue. Specifically, a myocardial infarction (heart attack) is caused by blockage in the coronary arteries, not bacteria, leading to the death of heart muscle tissue.
Step-by-step explanation:
An infarction is an area of dead tissue caused by a loss of blood supply, not an invasion of bacteria. This statement is False if it implies that bacteria cause infarctions. In the context of the heart, this kind of tissue death is known specifically as a myocardial infarction, which is the medical term for a heart attack. A myocardial infarction occurs when blood flow to a portion of the heart is blocked, leading to the death of cardiac muscle cells due to oxygen deprivation. While bacteria can cause infections in the cardiovascular system leading to conditions such as endocarditis, myocarditis, or vasculitis, they do not cause myocardial infarctions directly.
A common cause of myocardial infarction is the complete blockage of the coronary arteries, often due to a buildup of atherosclerotic plaque. This blockage restricts blood flow and oxygen to the myocardium, resulting in the death of the tissue. Such blockages are typically caused by red blood cells, cholesterol, and fatty acids that build up and form plaque in the vessel walls, which can rupture and form a clot, causing the blockage.