Circulatory+12

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The Circulatory System: ."The T**he circulatory system** is an organ system that passes nutrients such as amino acids, electrolytes and lymph, gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis====== This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the **cardiovascular system**, which distributes blood,and the **lymphatic system**, which returns excess filtration filtered blood plasma from the interstitial fluid between cells as lymph. While humans, as well as other, have a closed cardiovascular system meaning that the blood never leaves the network of arteries, veins and capillaries, some invertebrate groups have an open cardiovascular system. The most primitive animal phyla lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood. Two types of fluids move through the circulatory system: blood and lymph. Lymph is essentially recycled blood plasma after it has been filtered from the blood cells and returned to the lymphatic system. The blood, heart, and blood vessels form the cardiovascular from Latin words meaning 'heart'-'vessel' system. The lymph, lymph nodes, and lymph vessels form thelymphatic system. The cardiovascular system and the lymphatic system collectively make up the circulatory system." From Wikipedia Heart: The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium, left ventricle, right atrium and right ventricle. The right atrium is the upper chamber of the right side of the heart. The blood that is returned to the right atrium is deoxygenated and passed into the right ventricle to be pumped through the pulmonary artery to the lungs for re-oxygenation and removal of carbon dioxide. The left atrium receives newly oxygenated blood from the lungs as well as the pulmonary vein which is passed into the strong left ventricle to be pumped through the aorta to the different organs of the body. From Wikipedia Oxygen: About 98.5% of the oxygen in a sample of arterial blood in a healthy human breathing air at sea-level pressure is chemically combined with haemoglobinmolecules. About 1.5% is physically dissolved in the other blood liquids and not connected to haemoglobin. The haemoglobin molecule is the primary transporter of oxygen in mammals and many other species. From Wikipedia

For the quiz think about what you've learned during the slideshow and the page.
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5.What els is circulatory known as?
Circulatory system poem: Your veins go through you like a running train. Blood runs through your head like a running thread. It doesn't stop until it clots.