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The cardiac sphincter that lies at the lower end of the esophagus acts like a valve that ensures unidirectional flow of ingested food. To be more precise, it is located between the distal end of the esophagus and the stomach. Also known as the lower esophageal sphincter, it opens and allows the food to enter the stomach.
Jan 23, 2018 · Hormone Definition. A hormone is a biological compound used by multicellular organisms to organize, coordinate, and control the functions of their cells and tissues. These chemicals can control everything from metabolism to behavior, and are necessary for organisms to survive and reproduce. A hormone can be made from many starting molecules ...
Oct 4, 2019 · Bacteria Shapes. Bacteria come in a myriad of shapes. The three main shapes of bacteria are coccus, spiral, and bacillus. Cocci are bacteria that are spherical or ovoid in shape. Some cocci remain attached after binary fission, even though separate cells have been formed. For example, diplococci are cocci in pairs, streptococci are chains, and ...
Dec 1, 2010 · This study is the first national linguistic validation of the Montreal Global definition of GERD and is proof of its scientific validity, based on the same methodology used to create the Montreal statements, and suggests that evidence-based International disease classification systems can be applied to local settings after validation by local experts.
Sep 8, 2017 · Stomach Definition. The stomach is a muscular organ that is found in our upper abdomen. If we were to locate it on our bodies, it can be found on our left side just below the ribs. In simple terms, the stomach is a kind of digestive sac. It is a continuation of the esophagus and receives our churned food from it.
Jan 15, 2021 · Cellular respiration is the process through which cells convert fuel into energy and nutrients. To create ATP and other forms of energy that they can use to power their life functions, cells require fuel and an electron acceptor which drives the chemical process of turning energy from that fuel into a useable form.
Oct 4, 2019 · Chromosome Definition. A chromosome is a string of DNA wrapped around associated proteins that give the connected nucleic acid bases a structure. During interphase of the cell cycle, the chromosome exists in a loose structure, so proteins can be translated from the DNA and the DNA can be replicated. During mitosis and meiosis, the chromosome ...
