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Aspirin inhibits COX in the endothelium which is required for prostacyclin (PGI2) production. PGI2 is an anti aggregant and vasodilator . Aspirin also inhibits thromboxaneA2 ( TXA2) production in the platelets. TXA2 is a platelets aggregant and vasoconstrictor hence antagonist of PGI2. So aspirin decrease both PGI2 and TXA2 production but endothelium cells ...


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The two cases are slightly different. 'Ancestry proportions', such as those given by 23andme, are given in the context of a reference panel. This means that they aggregate genetic data from individuals into particular countries, say Spain, Italy and France. They would then look at the genome of the individual they are testing, and find how much of the genome ...


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Blood is a body fluid in humans and other animals such as goats, sheep, rams, oxen, bulls, doves, etc. that is pushed through the organism by the heart, which delivers necessary "essence" or "substance" such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. Blood is made up of blood ...


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Blood transfusions are done with erythrocyte concentrate and not whole blood. The antibodies are dissolved in the blood plasma. Grafting parts of the donor's immune system by transfusing white blood cells (the leukocytes) would cause even more problems than just agglutination in most cases. That's why care is taken to separate the red blood cells.


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Your book is talking about an embryonic structure, the neural tube. This structure forms from an invagination of the neural plate, a collection of cells on the dorsal surface of the early embryo. The process forms a hollow neural tube that will eventually develop not only into the spinal cord but also into the entire CNS. (image from https://commons....


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Yes, it is possible to get decompression sickness with other gasses, such as the "oxygen bends" or oxygen decompression. For instance, in this study, they demonstrated that oxygen decompression sickness in mice. Another study demonstrates a more common non-nitrogen decompression sickness - helium bends. Undoubtedly you will be wondering at this ...


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The water doesn't get drained. As blood flows down a vas rectum, in any given section of the arteriole the tonicity is slightly higher outside the arteriole vs inside the arteriole. This results in a small amount of water flowing out of the arteriole to attempt to equilibrate the osmolarity. But before this has even finished happening, the blood has ...


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Do people need nitrogen from air for health? No. This is well established! Can people breath totally nitrogen-free atmosphere for a long time? Yes. Also well established! I know, nitrogen is essential for life, and in big quantities, but maybe people can take it entirely from food, from proteins, etc? As expounded on in the comments by AliceD, nitrogen ...


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In short many things determine life expectancy and the interplay between different factors will determine an individuals life expectancy and a species' average life expectancy. How life expectancy links to size: Among mammals there is an inverse relation between heart rate and life expectancy (mammals tend to average 7.3+/15.6 x10^8 beats per lifetime which ...


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Electric Eel In the electric eel, some 5,000 to 6,000 stacked electroplaques can generate a shock of up to 860 volts and up to 1 ampere of current (1). They can also concentrate the discharge by curling up and making contact at two points along its body. When agitated, they can produce these intermittent electric shocks over at least an hour without tiring. ...


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