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percentage of oxygen in human body

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However, considering that oxygen is the heavier element (atomic weight of oxygen is 16.00 amu or 2.6 x 10 -23 grams), it contributes the most to the overall weight of a human. You can never have a reading that is too “high” when it comes to blood oxygen ― 100 is perfect. In addition to being a component of water, oxygen is … Therefore, a human being uses about 550 liters of pure oxygen … What Are Normal Blood Oxygen Levels? In addition, the pulmonary capillaries get damaged. Oxygen therefore contributes a majority of a human body's mass, followed by carbon. Blood oxygen levels (arterial oxygen) indicate the oxygen levels present in the blood that flows through the arteries of the body. Oxygen is required for other 90 percent or our energy, and every cell in the body requires oxygen to live. However, low blood oxygen may be an emergency, and waiting for blood test results may take time. For healthy patients with no other conditions, a blood oxygen level should be between 95 and 100 percent. The human body can perform best at sea level, where the atmospheric pressure is 101,325 Pa or 1013.25 millibars (or 1 atm, by definition).The concentration of oxygen (O 2) in sea-level air is 20.9%, so the partial pressure of O 2 (pO 2) is 21.136 kPa.In healthy individuals, this saturates hemoglobin, the oxygen-binding red pigment in … Oxygen (65%) and hydrogen (10%) are predominantly found in water , which makes up about 60 percent of the body by weight. By mass, human cells consist of 65-90% water (H2O), and a significant portion is composed of carbon-containing organic molecules. Oxygen is the most abundant element in the human body accounting for approximately 65% of a person's mass. Therefore, it isn't surprising that most of a human body's mass is oxygen. In fact, over half of the human body is made up of water (50-70%). Effects as a function of altitude. The four elements are oxygen, hydrogen, carbon, nitrogen. Hydrogen, therefore, enjoys a greater atomic percentage than oxygen and every other element in the human body. The body consists of 65% oxygen, 18% carbon, 10% hydrogen, 3% … Each water molecule consists of two hydrogen atoms bonded to one oxygen atom, but the mass of each oxygen atom is much higher than the combined mass of the hydrogen. Here is a quick rundown, with the percentage of body weight in parentheses. Before you start thinking we should float away with all the oxygen, hydrogen, and nitrogen atoms, remember that the oxygen molecules are mainly part of the water in our body (H2O). This goes down with moving to a higher altitude. Carbon, the basic unit for organic molecules, comes in second. Oxygen is element that is found in the highest percentage by weight in the human body. In guinea pigs exposed to 100 percent oxygen at normal air pressure for 48 hours, fluid accumulates in the lungs and the epithelial cells lining the alveoli. The air that is inhaled is about 20-percent oxygen, and the air that is exhaled is about 15-percent oxygen, so about 5-percent of the volume of air is consumed in each breath and converted to carbon dioxide. Normal arterial oxygen pressure (PaO2) measured using the arterial blood gas (ABG) test is approximately 75 to 100 millimeters of mercury (75-100 mmHg). Below 85% may cause some cognitive problems. For the body to receive oxygen, the respitory system, heart, cells, and arteries and veins must play an active role. It becomes a problem at 85–90% - called hypoxia. 99% of the mass of the human body is made up of the six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Human energy comes from food and oxygen, but food only gives us 10 percent of our energy needs. 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