transportation in human beings

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Transporta tion In Human Beings..

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Page 1: Transportation in human beings

Transportation In Human Beings..

Page 2: Transportation in human beings

The transport system in animals is called the circulatory system. The materials are transported from one part of the body to another by a mass flow system which is the circulatory system. The animals, particularly the more advanced forms, have a higher metabolic rate. This means that they require more nutrients and oxygen at a faster rate. They also produce more wastes that have to be removed from the cells in less time. The circulatory system has to ensure that the materials reach all the cells of the body and in time. This system should also collect the materials from the cells and transport them wherever required. Thus, the movement of materials into and out of the system should be possible. The need to meet all these requirements has resulted in a mass flow system through blood vessels and body spaces.

WHAT IS TRANSPORTATION???

Page 3: Transportation in human beings

The circulatory system also called the cardiovascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis.

Circulatory System

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Materials to be transported include digested food, respiratory gases, hormones, excretory products, etc. The digested food includes sugars like glucose, amino acids, fatty acids and their derivatives. Blood which is the vascular tissue in man is over 90% water. Thus, only the water-soluble substances are transported through this fluid. For the transport of fatty substances, body uses another fluid called the lymph.Thus, there are two circulatory systems:Blood circulatory systemLymphatic circulatory system

Materials To Be Transported…..

Page 5: Transportation in human beings

The essential components of the human cardiovascular system are the heart, blood, and blood vessels.[5] It includes: the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provideoxygenated blood. An average adult contains five to six quarts (roughly 4.7 to 5.7 liters) of blood, accounting for approximately 7% of their total body weight.[6] Blood consists of plasma, red blood cells, white blood cells, and platelets. Also, the digestive system works with the circulatory system to provide the nutrients the system needs to keep the heart pumping.[7

Human Cardiovascular System

Page 6: Transportation in human beings

Depiction of the heart and circulatory system

Cross section of a human artery

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Page 8: Transportation in human beings

Human Heart

Page 9: Transportation in human beings

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 (poor in oxygen) 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.

Heart

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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 withhemoglobin molecules. About 1.5% is physically dissolved in the other blood liquids and not connected to hemoglobin. The hemoglobin molecule is the primary transporter of oxygen in mammals and many other species.

Oxygen Transportation

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Made By: Paridhi Bhatia 10th-C