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Anonymous users2024-02-06The five elements with more content in the human body are oxygen, carbon, hydrogen, nitrogen, and calcium, among which the most abundant metal element is calcium a, and the most abundant metal element in the human body is calcium, not iron, so the option is wrong b. The metal element with the highest content in the human body is calcium, so the option is correct c. The metal element with the highest content in the human body is calcium, not sodium, so the option is wrong D. The metal element with the highest content in the human body is calcium, not oxygen, so the option is wrong so choose b
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Anonymous users2024-02-05Calcium. Calcium is one of the most important elements in the human body, ranking fifth only after carbon, hydrogen, oxygen and nitrogen. It is the most abundant metal element in the human body.
The amount of calcium is about the total weight of the human body. 99% of the calcium in the body is stored in bones and teeth, and only 1% is dispersed in blood, extracellular fluid and soft tissues. Calcium is an indispensable substance for our life activities, not only helping us to build strong bones and teeth, but also participating in nerve conduction, muscle contraction, heart beating, blood clotting and acid-base balance.
It plays a vital role in maintaining a variety of physiological activities of the human body (such as regulating the normal excitability of neuromuscular, regulating the permeability of capillaries, and participating in coagulation mechanisms).
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Anonymous users2024-02-04What is the most abundant metallic element in the human body? It seems simple, but the accuracy rate is less than 10%!
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Anonymous users2024-02-03Elemental calcium.
The most abundant metallic element in the human body is calcium. The human body contains about 60 kinds of elements, which are gathered into the building blocks of life activities, among them, the most abundant metal element is calcium, which accounts for about the human body content, and the most abundant non-metallic element is oxygen, accounting for about 65% of the human body content.
Calcium is a metallic element, symbol CA, which is located in the 4th period of the periodic table of chemical elements, and is a silvery-white crystal at room temperature.
Animal bones, clam shells, and eggshells all contain calcium carbonate. It can be used as a deoxidizer for alloys, a dehydrating agent for oils, a reducing agent for metallurgy, a desulfurization and decarburizer for iron and ferroalloys, and an absorbent in electron tubes. Its compounds are used in industry, construction and medicine.
The content of chemical elements in the human body and the benefits of calcium for the human body:
The content of chemical elements in the human body is ranked from high to low: oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, sulfur, potassium, sodium, chlorine, magnesium, iron, copper, iodine, manganese, etc.
The average human body calcium is 1200 1400 grams, accounting for about 99% of the body's net weight, of which it is stored in bones and teeth. In addition, most of the 1% calcium is positive in soft tissues, extracellular fluid, and blood, maintaining a stable balance with bone calcium.
On the one hand, calcium in the body constitutes bones and teeth, and on the other hand, it can participate in various physiological functions and the whole process of metabolism, affecting the activities of every human organ and tissue.
Sodium bicarbonate and carbonic acid are both buffering substances in the human body, and they are called buffer pairs, and I personally believe that the small amount of sodium bicarbonate that the human body needs normally does not need to be ingested from outside the body.
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