Craig A. Simmons is in the Translational Biology & Engineering Program at the Ted Rogers Centre for Heart Research, and in the Department of Mechanical & Industrial Engineering and Institute of ...

Your aortic valve is part of your heart, a strong muscle that pumps blood through your body. The aortic valve controls the blood flowing out from the heart. It opens every time your heart contracts, ...

The four valves of the heart allow blood to flow through the heart in the right direction. The valves open or close each time the heart beats. Problems with the heart valves can lead to palpitations, ...

Directional-control valves are common in pneumatic systems. They control compressed-air flow to cylinders, rotary actuators, grippers, and other mechanisms in packaging, handling, assembly, and ...

The mitral valve is a flap of tissue that sits in the left side of the heart, between the left atrium and the left ventricle. It keeps blood flowing in the forward direction, from the atrium into the ...