In 1947‚ experiments in which small quantities of Ca2+ ions were injected directly into the cell showed that an increase in intracellular calcium led to skeletal contractions. However it was not until the early 1960s when the way calcium ions were stored in cells became clearer thanks to work from Ebashi and Lipmann. (Burgoyne and Petersen‚ 1997). Calcium signalling determines whether or not a cell is activated. It is determined by calcium-ON and calcium-OFF mechanisms. Calcium-ON is responsible
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• Systemic = heart → arteries → arterioles → capillary beds in muscles‚ organs etc → venules → veins → heart • Pulmonary = heart → arteries → arterioles → capillary beds in lungs → venules → veins → heart u gs e u es e s ea t BLOOD VESSELS • Lumen: for blood • Innermost (tunica intima): endothelial lining for easy blood flow • Middle (tunica media): smooth muscle‚ innervated by ANS‚ for vasocontriction and vasodilation • Outermost (tunica adventita): collagen tissue for support BLOOD VESSELS
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answered: c. vasodilation 4. The diameter of the blood vessel is the same as You correctly answered: b. two times the radius of the blood vessel. 5. The opening of the blood vessel where the blood flows is called the You correctly answered: b. lumen. 02/23/14 page 4 Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The variable that you altered in this activity was You correctly answered: c. vessel radius. 2. Vessel radius and fluid flow You correctly
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comments on the ever-changing cultural scene. According to Fr Robert‚ proponents consider Gaudium et Spes as the canon within the canon‚ however‚ he disagrees with this view because he ppppoint out that Gaudium et Spes should be read in the light of Lumen Getum. Fr Robert also pointed that for tractors Gaudium et Spes is the source of mischieves in connection to the morden world. Gaudium et Spes is the longest of the Vatican document and in the history of the magisterium. Major complains given to it
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Features and outcomes of spontaneous bacterial peritonitis in Egypt‚ single center experience prospective study Spontaneous bacterial peritonitis (SBP) is the infection of the ascetic fluid that occur in the absence of a visceral perforation and in the absence of an intraabdominal inflammatory focus such as abscess‚ acute pancreatitis or cholecystitis (Guarner C and Soriano G‚ 2007). Since its initial description in 1964‚ research has transformed spontaneous bacterial peritonitis
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REPRODUCTIVE SYSTEM Reproductive System A system of sex organs within an organism which work together for the purpose of sexual reproduction. Many nonliving substances such as fluids‚ hormones‚ and pheromones are also important accessories to there productive system. Sexual reproduction produces new individuals - Gametes (sperm & egg) formed by testes and ovaries - Fertilization produces one cell (a zygote)with one set of chromosomes from each parent - Creates genetic variation . Gonads produce
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Hunger Target. Retrieved from http://www.google.com/url?sa=t&source=web&cd=5&ved=0CEQQFjAE&url=http%3A%2F%2Fmdg.ei.columbia.edu%2Feast%2Fsitefiles%2Ffile%2FMDG1%2520Hunger%2520Target.pdf&ei=_4SZT4yBMqjC2wWd7_WZBw&usg=AFQjCNESYLIglK4uIKkoQ1UdTij_MK6x_g LUMEN CHRISTI MAGAZINE (April 2011). Roles of Nurses in Achieving Millenium Development Goals. Retrieved from http://healthmad.com/conditions-and-diseases/roles-of-nurses-in-achieving-millenium-development-goals/ Pirozzi (2000). Eradicate extreme poverty
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Location of the appendix in the digestive system On the basis of experimental evidence‚ acute appendicitis seems to be the end result of a primary obstruction of the appendix lumen.[3][4] Once this obstruction occurs the appendix subsequently becomes filled with mucus and swells‚ increasing pressures within the lumen and the walls of the appendix‚ resulting in thrombosis and occlusion of the small vessels‚ and stasis of lymphatic flow. Rarely‚ spontaneous recovery can occur at this point. As the
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Critical Care Outline Chapter 66 * Critical care nursing: specialty dealing with human responses to life-threatening problems. * Critical care units (CCUs) or ICUs: designed to meet the special needs of acutely and critically ill pt’s. * Types of critical care: system based‚ medical‚ surgical‚ trauma‚ burns‚ age specific * Rapid response team (RRTs): provide for the delivery of advanced care by specialized teams usually composed of: * A critical care nurse * A respiratory
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Name : Ronald Jordan Topic: Discuss ethics and the development of international law. Introduction International law is defined as :“A body of rules common to all civilized nations‚ equally binding upon all and impartially governing their mutual intercourses.” On the other hand‚ the term ethics‚ with reference to the Oxford dictionary ‚ simply means Moral principles that govern a person’s behavior or the conducting of an activity. The question then arises how does ethics play a
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