Final answer:
The term for symptoms related to a lack of oxygen in the heart muscle is angina, which is caused by ischemia and leads to chest pain as heart muscle cells become oxygen-starved.
Step-by-step explanation:
The term used to represent any symptoms that are related to a lack of oxygen in the heart muscle is angina. Angina refers to chest pain or pressure that occurs when the heart muscle cells do not receive adequate blood flow and thus become starved of oxygen. The condition underlying angina is called ischemia, which means reduced blood flow and oxygen to the heart muscle. In contrast, a myocardial infarction (MI), or heart attack, occurs when there is a complete blockage of the coronary arteries leading to the death of the cardiac muscle tissue. Angina can be a symptom of underlying coronary heart disease, which results from the buildup of plaque in the coronary arteries and may lead to a heart attack. The other terms, arrhythmia and infarction, refer to different heart conditions. Arrhythmia is an irregular heartbeat, and infarction is the process of tissue death due to a lack of blood supply, such as in a myocardial infarction.