Map of the Human Heart Let's get straight to the heart of the matter—the heart's job is to move blood. Day and night, the muscles of your heart contract and relax to pump blood throughout your body.

A fibrous path 'twixt heart and brain may make you swoon. December 7, 2023 5:00 AM ET. Jon Hamilton ... which regulates functions including heart rate, blood pressure and breathing.

A fibrous path ‘twixt heart and brain may make you swoon. By Jon Hamilton (NPR) Dec. 7, 2023 3:42 p.m. ... and it occurs when there is a sudden drop in heart rate and blood pressure.