Trunk of anterior interventricular branch of left coronary artery

Looks like

The main stem of the left anterior descending artery, running down the groove on the front of the heart to its tip.

What it does

Supplies the front wall of the left ventricle, the front two-thirds of the septum and the apex — the largest share of heart muscle.

Keeping it well

A blockage near its start causes a large heart attack. Chest pressure over 15 minutes, sweating or breathlessness: call an ambulance.

Related conditions

• 22q11.2 deletion syndrome (DiGeorge)
• Aortic stenosis
• Atrial flutter
• Cardiomyopathy (dilated, restrictive, arrhythmogenic)
• Chagas disease
• Congenital heart defects
• Coronary artery disease
• Diphtheria
• Down syndrome (trisomy 21)
• Eating disorders
• Extra heartbeats (ectopics and palpitations)
• Fainting (syncope)
• Friedreich's ataxia
• Heart attack
• Heart failure
• High blood pressure
• High cholesterol
• Hypertrophic cardiomyopathy
• Hypothermia & frostbite
• Kawasaki disease
• Long QT syndrome
• Metabolic syndrome
• Myocarditis
• Orthostatic hypotension & POTS
• Panic disorder
• Pericardial effusion & tamponade
• Pericarditis
• Peripheral artery disease
• Phaeochromocytoma & hyperaldosteronism
• Pre-eclampsia
• Raynaud's phenomenon
• Sepsis
• Shock (circulatory failure)
• Sudden cardiac arrest
• Sudden infant death syndrome
• Supraventricular tachycardia
• Takotsubo (stress) cardiomyopathy
• Tuberous sclerosis complex
• Vasculitis (GCA & others)
• Wolff–Parkinson–White syndrome