Final answer:
Angina pectoris is the term for pain caused by insufficient blood flow and oxygen to the heart muscle, often due to a blockage or spasm of the coronary arteries.
Step-by-step explanation:
The term used for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries is angina pectoris. Angina is characterized by chest pain or discomfort that occurs when the heart muscle cells do not receive sufficient blood flow and oxygen, a condition known as ischemia. This can manifest as pain in various parts of the upper body such as the back, neck, shoulders, or jaw, and might be accompanied by symptoms like shortness of breath, sweating, or nausea. Angina comes in different forms, including stable angina, which occurs during physical exertion or emotional stress and is relieved by rest or medication, and unstable angina, which is more unpredictable and signifies a higher risk of a myocardial infarction (heart attack), where the blood flow to a part of the heart is blocked.