Heart Index – M

A B C D E F H I L M N O P R S T V
Menopause

The stage in a woman’s life during which her menstrual cycle stops. It normally occurs at the age of 45 to 50.

Mitral valve

The valve which separates the left atrium from the left ventricle. Also known as the bicuspid valve.

Monounsaturated fat

A form of fat, the molecules of which have long chains of carbon containing only one (“mono-“) double bond. It is found in liquid form at room temperature.

MRI

Short for magnetic resonance imaging. A method of producing three-dimensional, high-resolution images of internal body structures through the use of powerful magnets.

Myocardial infarction

Another term for heart attack. A cardiac event caused by insufficient, or complete cessation of blood flow to the heart such that the heart muscle in the affected area begins to die.

Myocardium

Middle layer of the heart’s wall; also the layer which provides the heart with the muscular strength to pump blood around the body.