Refractory period The refractory period is a short period of time after the generation of an action potential during which a neuron or muscle fiber cannot fire in respons ...
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One of the most common bad habits, sometimes leading to serious health problems, is smoking tobacco. South America is considered the birthplace of tobacco, from where it ...
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The human digestive system has many unusual mechanisms that regulate digestion processes. One of these mechanisms is the release of hormones without the participation of ...
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Chondroblastoma is a rare type of tumor that develops from chondroblasts. Chondroblasts are cells that are usually present in areas of active bone growth. Chondroblastoma ...
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A precursor is a substance that precedes another substance in a sequence of metabolic transformations. A precursor is a substance from which another substance is synthesi ...
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They are an accumulation of lymphoid tissue (participating in the body’s defense response) in the pharynx. M. located between the palatine arches are called palatine (or ...
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Parathyroidectomy is a surgical procedure that is performed to remove the parathyroid glands. This surgery is usually performed to treat hyperparathyroidism, a condition ...
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Trilobites (Latin Tres - Three, Lobus - Share) are marine arthropods that lived during the Paleozoic era, from approximately 540 to 245 million years ago. These organisms ...
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