T he heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Blood flows through the heart in one direction, similar to a one-way traffic system. Heart valves help control the direction of blood flow, acting like doors opening and closing with every heartbeat.

Specifically, the researchers found that neurons below the skull send signals from the heart to the brain that trigger a drop in heart rate, blood pressure and breathing rate. That, in turn, may ...

Heart valves made in minutes control blood flow immediately after being implanted into sheep. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2023 / 06 / 230607123521.htm ...

The research highlights how a ketone body called β-hydroxybutyrate (3-OHB) - a molecule produced by the liver when breaking down fat - can enhance blood flow to the heart.