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Connective Tissue Lactic Acid
1,736 wordsThe immediate source of energy for muscular contraction is the high-energy phosphate compound called adenosine triphosphate (ATP). Although ATP is not the only energy-carrying molecule in the cell, it is the most important one, and without sufficient amounts of ATP most cells die quickly. The three main parts of an ATP molecule are: an adenine portion, a ribose portion, and three phosphates linked together. The formation of ATP occurs by combining adenosine diphosphate (ADP) and inorganic phosph...
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Central Nervous System Peripheral Nervous System
1,688 words... ws the cross-bridge to detach and re-attach to another active site on an actin molecule. This contraction cycle is repeated as long as free calcium is available to bind the troponin and ATP is available to provide the energy. The signal to stop contraction is the absence of the nerve impulse at the neuromuscular junction. When this occurs, an energy requiring calcium pump located within the sarcoplasmic reticulum begins to move the calcium back into the sarcoplasmic reticulum. This removal o...
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Vena Cava Blood Flow
693 wordsEXPLORATION AND DISSECTION OF A MAMMALIAN HEART In this experiment, we obtained a fresh heart and dissected it to examine and observe the different parts of the heart, as well as studying how they function and work Problem: How can we study the heart through dissection? The most basic function of the circulatory system is to move the blood. The organ that provides the force to push the blood through the vessels is the heart. The mammalian heart is composed of four chambers to which large blood v...
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Miles Per Hour Speed Of Light
1,938 wordsThe Rise of Einsteinian Special Relativity In 1905, Einsteins Theory of Special Relativity was proposed. The reason that it is so special is because it was part of the more complex and extensive Theory of General Relativity, which was published in 1915. His theory reshaped the world of physics when it contradicted all previous laws of motion erected by Galileo and Newton. By mathematically manipulating these previous laws of motion, physicists in the nineteenth century were able to explain such ...
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Eccentric And Concentric Muscle Contractions
1,323 wordsIso kinetic, Eccentric, and Concentric Muscle Contractions There are three basic types of muscle contraction: isometric, isotonic, and iso kinetic. An isometric contraction occurs when a muscle contracts, producing force without changing the length of muscle. To demonstrate this action, in the sitting position place your right hand under your thigh and place your left hand on your right biceps muscle. Now, pull up with your right hand or in other words, attempt to flex your right elbow. Note tha...
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Vena Cava Blood Vessels
1,407 wordsThe Circulatory System The circulatory system in anatomy and physiology is the course taken by the blood through the arteries, capillaries, and veins and back to the heart. In humans and the higher vertebrates, the heart is made up of four chambers the right and left auricles, or atria, and the right and left ventricles. The right side of the heart pumps oxygen-poor blood from the cells of the body back to the lungs for new oxygen; the left side of the heart receives blood rich in oxygen from th...
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Miles Per Hour Speed Of Light
1,955 wordsThe Rise of Einsteinian Special Relativity In 1905, Einstein? s Theory of Special Relativity was proposed. The reason that it is so? special? is because it was part of the more complex and extensive Theory of General Relativity, which was published in 1915. His theory reshaped the world of physics when it contradicted all previous laws of motion erected by Galileo and Newton. By mathematically manipulating these previous laws of motion, physicists in the nineteenth century were able to explain s...
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Stock Market Crash Third World Countries
3,623 wordsThe soaring volume of international finance and increased interdependence in recent decades has increased concerns about volatility and threats of a financial crisis. This has led many to investigate and analyze the origins, transmission, effects and policies aimed to impede financial instability. This paper argues that financial liberalization and speculation are the most reflective explanations for instability in financial markets and that financial instability is likely to be transmitted glob...
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Pulmonary Artery Vena Cava
1,945 wordsHeartthe human heart is a specialized, four-chambered muscle that maintains BLOOD flow in the CIRCULATORYSYSTEM. Located in the thorax, it lies left of the bodys midline, above and in contact with the diaphragm. It is situated immediately behind the breastbone, or sternum, and between the lungs, with its apex tilted to the body cavity's left side. In most people the apex can be felt during each heart contraction. At rest, the heart pumps about 59 cc (2 oz) of blood per beat and 5 l (5 qt) per mi...
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Divided Into Four Pulmonary Artery
3,525 wordsTheHheart Biology Histology The Human Heart. Abstract: Dorlands Illustrated Medical Dictionary defines the heart as the viscus of cardiac muscle that maintains the circulation of the blood. It is divided into four cavities; two atria and two ventricles. The left atrium receives oxygenated blood from the lungs. From there the blood passes to the left ventricle, which forces it via the aorta, through the arteries to supply the tissues of the body. The right atrium receives the blood after it has p...
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