The role of the lungs in pulmonary circulation
By: Caroline Fynn
Pulmonary circulation refers to the blood circulation between the heart and the lungs. The pulmonary arteries carry deoxygenated blood away from the heart into the lungs for oxygen renewal, and then the pulmonary veins take the oxygenated blood from the lungs back to the heart...
An overview on diseases of the heart and cardiovascular system
By: Caroline Fynn
Diseases of the heart and cardiovascular system affect one in four people between the ages of thirty and sixty five. Risk factors include: Smoking, obesity, a high amount of blood cholesterol, a lack of physical exercise, high stress levels and poor diet. One of the...
How smoking impacts the human circulatory system
By: Janet Farricelli CPDT-KA
If you are considering to quit smoking, perhaps learning more about the negative impacts smoking has to your circulatory system may work as a further incentive to successfully call it quits. Indeed, smoking does much more than causing a foul breath, an annoying chronic cough...
How the human heart works
By: Caroline Fynn
The heart is located in the space between the lungs known as the thoracic cavity in the mediastium. It lies slightly to the left and is approximately the size of the fist. The interior of the heart is divided into four chambers; the two...
The role of the placenta in fetal circulation
By: Lisa Stephens
For the nine months of pregnancy, the placenta serves an essential role in the survival of the fetus. Once the baby is born into the world the placenta is then expelled from the body and is no longer needed. It is the only organ in...
Reasons why oxygen is so important to the blood and cells
By: Wendy R.
Red Blood cells are the body's most common type of blood cell and are extremely important in delivering oxygen to the rest of your body. Red blood cells contain hemoglobin, which is a molecule that can bind to Oxygen. The red blood cells color...
A look at how varicose veins develop
By: Caroline Fynn
The word varicose is a derivative of the Latin word varix which means twisted. Therefore the term varicose vein implies that the vein has become twisted, but there is much more involved than this. The veins become lumpy, knotted and unsightly, they can be painful...
A look at how CPR restarts the circulatory system
By: Tarot
Let's start by clearing up one common misconception. Cardio pulmonary resuscitation (CPR) does not restart the circulatory system. The purpose of CPR is to maintain the supply of oxygen to the brain and other vital organs until the patient can receive professional medical aid from...
The role of the placenta in fetal circulation
By: Corinna Craddock
The Placenta The placenta is a temporary organ that feeds the life growing inside a mother's womb. As the embryo is forming, a yolk sac is created around it. The yolk sac becomes the site of formation for blood that will circulate through the unborn...
An overview of pulmonary circulation
By: Cynthia Wall
Attention passengers! The Pulmonary Circulation Train is leaving Right Atrium Station. All Aboard! The trip of the body's blood from all distant points of the body has now returned. Blood cells carrying their load of CO2 have converged in two main tracks. The vena cavae...

 

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