These chambers repressurize the blood and send it through the arteries to the rest of the body. In other words, octopuses and humans solve the same problem in two very different ways: octopuses by having multi
At 18, Katie Stubblefield lost her face. At 21, she became the youngest person in the U.S. to undergo the still experimental surgery. Follow her incredible story.
Heart disease covers everything from clogged arteries that cause heart attacks to heart defects you’re born with. Learn how the different types of heart disease affect your body and what symptoms to look for from this WebMD slideshow.
Carbon monoxide poisoning: Carbon monoxide binds to hemoglobin more tightly than either oxygen or carbon dioxide, which minimizes the delivery of oxygen to all the tissues of the body, including the brain, the heart and muscles. Carbon monoxide is a common product of poorly vented heaters (space...
When Does Being Upside Down Turn Deadly? There doesn't even seem to be a hard-and-fast rule about how long it's safe to hang out upside down. For instance, people with heart conditions die a lot faster in situations like these, and young, healthy people can survive longer than the ol...
How many brains does the human body have?The Brain:The human brain is a vital organ fundamental to human survival. Without the brain, a person instantly dies. It is part of the central nervous system along with the spinal cord.Answer and Explanation: ...
What is Heart Disease? Coronary artery disease (CAD), commonly known as heart disease, is a condition in which cholesterol, calcium, and other fats accumulate in the arteries that supply blood to the heart. It is the most common type of heart disease. This material hardens forming a plaque...
Your heart rate is usually measured by how many beats there are in one minute while you are resting. A resting heart rate varies from person to person. For adults, the normal range is 60 to 100 beats per minute. It depends on things such as: Fitness Health conditions Medications Body ...
Collateral arteries are not pre-existing in the mouse heart, and only form in response to injury. Myocardial infarction creates tissue hypoxia that triggers the expression of growth factors and chemokines that guide collaterogenesis. Collateral development is more robust in neonatal hearts when ...
The heart is known as the cardiac muscle. It is a pump that collects blood and then squeezes such that the blood is sent first to the lungs and then to the rest of the body.Answer and Explanation: The heart is a muscle. It is a very strong muscle in that it contracts with enough...