Heart attack
Symptoms
Chest pain that may feel like pressure, tightness, pain, squeezing or aching.
Pain or discomfort that spreads to the shoulder, arm, back, neck, jaw, teeth or sometimes the upper belly.
Cold sweat.
Fatigue.
Heartburn or indigestion.
Lightheadedness or sudden dizziness.
Nausea.
Shortness of breath.
Reasons
A heart attack occurs when an artery that sends blood and oxygen to the heart is blocked. Fatty, cholesterol-containing deposits build up over time, forming plaques in the heart's arteries. If a plaque ruptures, a blood clot can form. The clot can block arteries, causing a heart attack.
no more reasons rest are just questions
An artery in the heart refers to a coronary artery, which is a vital blood vessel that wraps around the heart's surface, delivering essential oxygen-rich blood and nutrients directly to the heart muscle (myocardium) so it can pump blood throughout your body
Coronary arteries are the essential blood vessels that supply the heart muscle with oxygen-rich blood, wrapping around the outside of the heart to enable its constant, rhythmic pumping
The aorta is the largest and main artery in the human body, originating from the left ventricle of the heart to carry oxygen-rich blood to the entire circulatory system
The myocardium is the thick, muscular middle layer of the heart wall responsible for contracting and relaxing to pump blood throughout the body
Cardiomyocytes are specialized, striated muscle cells that make up the heart muscle (myocardium), responsible for its rhythmic, coordinated contractions to pump blood throughout the body