The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

Every day, your heart tirelessly pumps blood through your circulatory system ... all working together to facilitate the vital process of blood flow. Good circulation is essential for keeping ...

Your surgeon will make an incision in your chest to access your heart and will use a machine to take over blood flow while your heart is temporarily stopped. In some cases, minimally invasive ...

open as wide as it should, restricting blood flow through the heart - this means less blood ... into the atrium with a biological valve from a human donor or made from animal tissue from a pig ...

Your heart is an exquisitely engineered pump ... around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. Human fertilisation.

Q. I have a leaky heart valve that may need surgery down the road. Can you tell me about heart-valve surgery in one of your columns? A. First, let’s explain briefly how the heart works.

Hemodynamic digital twins are virtual representations of the way blood flows through the body ... model of the basic functional unit of the human placenta—the placentone. The team's research ...

New research shows that women who hit menopause later in life have healthier blood vessels and mitochondria and a different composition of metabolites in their blood than those who stop menstruating ...

Originally appeared on the NOVA Web site Cut to the 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 ...