Myocardium of right ventricle

Looks like

The muscle wall of the right ventricle, only about 3–5 mm thick, much thinner than the left.

What it does

Contracts to push blood into the lungs at low pressure.

Keeping it well

Thickens and fails under long-term high lung pressure; swelling of legs and breathlessness need a doctor.

Related conditions

• 22q11.2 deletion syndrome (DiGeorge)
• Aortic stenosis
• Atrial flutter
• Botulism
• 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)
• Fibromyalgia
• Frailty & falls in older age
• Friedreich's ataxia
• Heart failure
• Heat exhaustion & heatstroke
• Hypertrophic cardiomyopathy
• Hypothermia & frostbite
• Kawasaki disease
• Long QT syndrome
• Malnutrition & refeeding syndrome
• Muscular dystrophy
• Myocarditis
• Orthostatic hypotension & POTS
• Panic disorder
• Pericardial effusion & tamponade
• Pericarditis
• Polymyalgia rheumatica
• Rhabdomyolysis
• Sarcoma
• Sarcopenia
• Shock (circulatory failure)
• Sudden cardiac arrest
• Sudden infant death syndrome
• Supraventricular tachycardia
• Takotsubo (stress) cardiomyopathy
• Tetanus
• Tuberous sclerosis complex
• Wolff–Parkinson–White syndrome