The chemical symbol is O. A gaseous element that combines with other elements to form oxides.
A chemical element that is a common colourless gas which is present in the air and essential to human life.
Colorless, odorless gas essential for respiration and metabolism.
A gas forming about 21% of atmospheric air; essential to respiration.
A colorless, odorless gas that is essential for all forms of life. Oxygen makes up about 21 percent of the Earth’s atmosphere and about 90 percent (by weight) of water. Because oxygen combines readily with other elements, it is distributed throughout the solid matter of the Earth. Along with carbon and hydrogen, oxygen forms the chemical basis of much organic material. Every cell of the body requires oxygen; people obtain oxygen from the air and take it into the lungs through respiration.
An odorless colorless gas that makes up one-fifth of the atmosphere. Oxygen is essential to most forms of life in that it combines chemically with glucose (or some other fuel) to provide energy for metabolic processes. In man oxygen is absorbed into the blood from air breathed into the lungs. Oxygen is administered therapeutically in various conditions in which the tissues are unable to obtain an adequate supply through the lungs.
A colourless and odourless gas constituting just under 21 per cent of the earth’s atmosphere. As a medical gas, it is supplied in the UK compressed at high pressure (13,600 kilopascals (KPa)) in cylinders which are black with white shoulders. In hospitals, oxygen is often stored as a liquid in insulated tanks and controlled evaporation allows the gas to be supplied via a pipeline at a much lower pressure.
A medicinal gas used in the management of anemia, bleeding, ischemia, shock, pulmonary edema, pneumonia, respiratory distress, ventilatory failure, obstructive lung diseases, pulmonary embolism, myocardial infarction, mountain sickness, smoke inhalation, carbon monoxide or cyanide poisoning, gangrene, and other illnesses where its presence in the body is temporarily or chronically insufficient.
A transparent and scentless gas, constituting 21 percent of the Earth’s atmosphere. Oxygen is vital for nearly all life forms, humans included, as it is crucial for the metabolic breakdown of food to generate energy. This essential process, referred to as aerobic metabolism, occurs within body cells.
Oxygen is taken in through the lungs and transported into the bloodstream, where it attaches to the hemoglobin present in red blood cells. When blood rich in oxygen flows throughout the body, the oxygen is released from the red blood cells and delivered to the body’s tissues.
Extra amounts of oxygen are administered to manage conditions like severe hypoxia (insufficient oxygen in bodily tissues) or bronchitis. In certain cases, high-pressure oxygen is employed for the treatment of decompression sickness or carbon monoxide poisoning.
Oxygen is a colorless, tasteless, and odorless gas that makes up one-fifth of the Earth’s atmosphere, eight-ninths of water, and about half of the Earth’s crust. It fuels combustion and is vital for life. Oxygen readily bonds with many elements and is transported by blood from the lungs to our body tissues. The air we inhale contains 20% oxygen, while the air we exhale has 15%. This principle is behind the mouth-to-mouth or mouth-to-nose techniques of artificial respiration, where the rescuer provides the casualty with air that still holds 15% oxygen.