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Blood oxygen levels (arterial oxygen) indicate the oxygen levels present in the blood that flows through the arteries of the body. The human body like oxygen because it is a gas that keep their bodies alive. 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. By mass, human cells consist of 65-90% water (H2O), and a significant portion is composed of carbon-containing organic molecules. For the body to receive oxygen, the respitory system, heart, cells, and arteries and veins must play an ⦠The four elements are oxygen, hydrogen, carbon, nitrogen. Levels below 90 percent are considered low. 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. In addition to being a component of water, oxygen ⦠Hypoxemia can cause mild problems such as headaches and shortness of breath. Hypoxemia occurs when levels of oxygen in the blood are lower than normal. 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). Hydrogen, therefore, enjoys a greater atomic percentage than oxygen and every other element in the human body. Oxygen levels are usually measured with a pulse oximeter device attached to the finger; this device measures the amount of oxygen saturating the blood. Oxygen therefore contributes a majority of a human body's mass, followed by carbon. In addition, the pulmonary capillaries get damaged. 99% of the mass of the human body is made up of the six elements: oxygen, carbon, hydrogen, ⦠Premature babies, whose lungs may be underdeveloped when they are born, sometimes are put in incubators with oxygen-enriched atmosphere. Human energy comes from food and oxygen, but food only gives us 10 percent of our energy needs. Other methods include testing the oxygen levels through a pulse oximeter, wherein the levels are measured with a light sensor. If the level is below 90 percent⦠If blood oxygen levels are too low, your body may not work properly. Normal arterial blood oxygen saturation levels in humans are 95â100 percent. Normal arterial oxygen pressure (PaO2) measured using the arterial blood gas (ABG) test is approximately 75 to 100 millimeters of mercury (75-100 mmHg). 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. Here is a quick rundown, with the percentage of body weight in parentheses. It is commonly known as the Arterial Blood Gases test (ABG). Oxygen (65%) and hydrogen (10%) are predominantly found in water , which makes up about 60 percent of the body by weight. Therefore, a human being uses about 550 liters of pure oxygen (19 cubic feet) per day. Mayo Clinic defines the normal human oxygen level as 95 percent to 100 percent. Oxygen is the most abundant element in the human body accounting for approximately 65% of a person's mass. Oxygen is required for other 90 percent or our energy, and every cell in the body requires oxygen to live. The level of oxygen in the human body can be measured in many ways, but the simplest is a blood test. In fact, over half of the human body is made up of water (50-70%). 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. 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