 | Inquiry Last Scenery - Deoxygenated Blood Live at kl jam asia.sorry for the bad sound.. |
 | How the Body Works : Each Heartbeat With each heartbeat there are two phases in the passage of oxygenated blood and deoxygenated blood through the heart. In the phase of relaxation, or diastole, the heart fills with blood. As the ventricles relax, valves in the aorta and in the pulmonary artery close with a dup sound and blood pours into the two atria from the venae cavae and the pulmonary veins. The mitral and tricuspid valves between the atria and ventricles open, allowing blood into the ventricles. The heart then stops filling with blood. In the phase of contraction, or systole, the heart empties and a lub sound is made by the closing of the mitral and tricuspid valves. This prevents a backflow of blood into the atria as it is pumped from the ventricles into the pulmonary artery and the aorta. Each heartbeat lasts up to eight-tenths of a second, with systole lasting for four-tenths of a second and diastole occupying the remaining time. |
 | Blood Circulation of Fish Oxygenated blood (dark red) from the artery and deoxygenated blood (pink) from the vein is circulating in the tissues, viewed under the microscope. |
 | How the Body Works : The Continuous Circuit The Continuous Circuit In an adult's body about ten pints of blood are continuously being pumped by the heart through sixty thousand miles of blood vessels. Blood, which has acquired oxygen in the lungs, leaves the heart through the aorta, an inch-wide tube. The aorta branches into large arteries, which take the blood to the neck, head and arms. It then passes down the middle of the body carrying blood to the kidneys, liver, intestines and legs. The large arteries further divide into smaller arterioles and, then finally, into minute capillaries, which surround the body cells. Blood then passes into venules, small veins, and then into larger veins, which feed into the superior vena cava and the inferior vena cava, which return the deoxygenated blood to the heart and then to the lung, where the blood gives up carbon dioxide and acquires a fresh supply of oxygen. |
 | The Structure of Bone The Structure of Bone This is the structure of bone. Spongy or cancellous bone form the center bulk of all our bones. Its honeycomb structure keeps bone light, in contrast to the heavier, compact bone, which gives it strength. Bone cells or osteocytes are contained in spaces called lacunae. The minute projections of bone cells trail into adjoining channels known as canaliculi. Tissue fluid, which fills the lacunae, allows the transfer of materials between bone cells and capillaries. Haversian systems, each about one-sixtieth of an inch wide, make up the structure of compact bone. Each system is formed by a series of rings called lamellae, which are deposits of mineral salts and collagen fibers. Haversian canals, which run through the center of each Haversian system, contain the blood and lymphatic vessels supplying the bone. Here arteries carrying oxygenated blood are shown in red. Veins carrying deoxygenated blood are shown in blue. The lymphatic vessels are shown in white. A section through the shaft of the femur, a long bone, shows a central mass of spongy bone surrounded by the branching tubular Haversian systems. Blood vessels on the bone surface reach into the center of each Haversian system supplying the bone cells. |
 | How the Body Works : The Pancreas The Pancreas The pancreas is shown here with the foreground highly magnified to reveal its inner anatomy. Ninety-nine percent of pancreatic tissue is composed of acinar glands, which secrete an alkaline digestive juice into the duodenum via the pancreatic duct to help digest food. The endocrine areas of the pancreas, known as the islets of Langerhans, are composed of two major types of cell. The alpha cells secrete the hormone glucagon, and the beta cells secrete insulin, into the bloodstream. These hormones work in opposition to control the blood glucose level. Insulin promotes the uptake and usage of glucose in the tissues, particularly skeletal muscle and fat, and reduces glucose production in the liver. Glucagon has an anti-insulin effect in the liver, increasing glucose release. The anatomy of the pancreas also includes: the ampulla of the common bile duct: the pancreatic duct, which carries digestive juice containing enzymes to the duodenum; the acini, the exocrine portions of the pancreas which secrete digestive juice into the pancreas; the splenic arteries which conduct oxygenated blood into the pancreas; and the mesenteric veins, which carry deoxygenated blood containing insulin and glucagon away from the pancreas. |
 | How the Body Works : The Respiratory System The Respiratory System The network of air tubes spreading out just like the branches and twigs of a tree, form the structure of the lungs. The trachea, or windpipe, divides into two bronchi and these on entering the lungs, divide into bronchioles, alveolar ducts, alveolar sacs and individual alveoli. The right ventricle of the heart pumps deoxygenated blood to the lungs via the pulmonary arteries. At the alveoli, gaseous exchange of oxygen and carbon dioxide takes place between air in the lungs and blood in surrounding capillaries. |
 | Thanks to Our Troop _ High Quality Updated Version Because of the compassion our troops, life of the children in Iraq is being changed. These 2 children were given life-saving hope among many others with the coordinated support of Veteran of Iraq and charitable organization. The children lived with a condition known as Tetralogy of Fallot, allowed deoxygenated blood to be pumped throughout the children's bodies. If untreated the condition can lead to stroke or sudden death. Because medical technology in Iraq is not advanced enough to do the surgerical procedure. It is your love and compassion that saves many lives like them. Your willingness to change lives for the better. To learn more about the kids and their status, you can go to http://web.mac.com/victoreverywhere - go to the Page called "HOPE" |
 | Timmy Knee Drain My boy Tim gets 45cc of deoxygenated blood drained from his knee. |
 | How the Body Works : Inside the Heart Inside the Heart The heart is a muscular pumping organ which beats nonstop to circulate blood around the body. It functions as two halves, each consisting of a holding chamber, or atrium, and a pumping center, or ventricle. After circulating around the body, blood, now deoxygenated, returns to the right atrium through large veins, the superior vena cava and the inferior vena cava. When the atrium is full, blood is forced through the tricuspid valve into the right ventricle. It is then pumped to the lungs through the pulmonary valve into the pulmonary artery. The oxygenated blood returns via the pulmonary veins to the left atrium. After flowing through the mitral valve it is pumped out of the left ventricle into the aorta to return to the general circulation. |
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![Don\](images/articles/thumbs/beachrainthumb.jpg "Don\")
