The electrical signal then travels down through the conduction pathways to the heart's ventricles. This causes them to contract and pump out blood.
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that are to be excreted or removed from the body. Veins become larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from theabdomenand legs into the heart. ...
How Insomnia Works By: Maria Trimarchi Every insomniac knows the self-torture of looking at the clock throughout the night. © Karen Winton/iStock/Thinkstock When you haven't been getting enough sleep, things can start to get a little weird. A little fuzzy. Your memory seems cloudy...
This is important to know because in our project you are going to play two different types of video games that affect your heart rate. This leads us to explain how the heart beats. Secondly, you're going to learn about how the heart works. “The heartbeat is triggered by an electrical...
Human blood is designed to capture oxygen and safely bind it to a molecule known as hemoglobin. However, if you breathe in a high concentration of oxygen, it will overwhelm the blood, disrupting the central nervous system, damaging the lungs, heart and brain. How much oxygen do we inhale ...
ESPN's Kevin Pelton covers the W and is here to explain how all of this expansion stuff works - and how a new CBA should help the Valkyries use not just the expansion draft, but also trades and free agency to get competitive, fast. http://v.org/donate...
At its heart, a piece of bullet-proof material is just a very strong net. To see how this works, think of a soccer goal. The back of the goal consists of a net formed by many long lengths of tether, interlaced with each other and fastened to the goal frame. When you kick the ...
Human Body Healthy Digestion Wild Animals How Snakes Work Keep Reading When an aerobatic plane flies upside down, how does the fuel get to the engine? Explore More Advertisement How Your Lungs Work By: Craig Freudenrich, Ph.D. The heart and lungs work together to make sure your body ...
How the Heart Works 3D Animation #医学干货##医护之声# @医疗圈那点事 @医生的一些事一些情 @医生护士那点事 来源医学生Medic http://t.cn/RYaCSVr