what happens when oxygen goes into our body?
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Answers
Answer:
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Explanation:
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Answer:
Cellular respiration
Molecular oxygen, O2, is essential for cellular respiration in all aerobic organisms. Oxygen is used as an electron acceptor in mitochondria to generate chemical energy.
Take a look inside the cell to see these "powerhouses" of the cell,
petite organelles mitochondria, click here.
In the human body, oxygen uptake is carried out by the following processes:
Oxygen diffuses through membranes and into red blood cells after inhalation into the lungs. The heme group (that consists of an iron) of hemoglobin binds oxygen when it is present, changing haemoglobin’s color from bluish red to bright red.
A liter of blood can dissolve 200 cc of oxygen gas, which is much more than water can dissolve.
After being carried in blood to a body tissue in need of oxygen, O2 is handed-off to an enzyme (monooxygenase) that also has an active site with an atom of iron.
The enzyme uses oxygen to catalyze many oxidation reactions in the body (metabolism). Carbon dioxide, a waste product, is released from the cell and into the blood, where it combines with bicarbonate and hemoglobin for transport to the lungs. Blood circulates back to the lungs and the process repeats.
Find out more about cell, click here
A small part of the waste that comes from our body cells is watery, or easily dissolved in water; Furthermore, this is transported in the blood to a specific set of filter organs—the liver and the kidneys—and poured out of the body as the urine.
Another part of waste is passed off through the skin in the form of watery vapor as perspiration, or sweat. But part of the waste can be gotten rid of only by burning, and what we call burning is another name for combining with oxygen, or to use one word—oxidation;
Moreover, this is precisely the purpose of the carrying of oxygen by the little red blood cells from the lungs to the deeper parts of the body—to burn up, or oxidize, these waste materials which would otherwise poison our cells. When they are burnt, or oxidized, they become almost harmless.
While oxygen supports our life, and "oxidizes" or "burns" food to create energy and heat for our bodies, certain types of altered oxygen molecules called "Free Radicals" which are ever-present in our bodies, will damage our own cells and even our DNA, causing degeneration and diseases such as cancer.
A "radical" is an atom with an unbalanced electrical charge, and it will seek to steal electrons from other atoms - such as the atoms of our body cells!
As Dr. Tai likes to say, the oxidation of cells by free radicals makes the human body "rust" like oxidation of metal makes it rust - and you know what rust does to the strength and natural beauty of the metal.
Our bodies need the help of "antioxidants" to neutralize the oxidation properties of those invading free radicals.
There are thousands of research papers that point to the production of free radicals as the primary cause of aging.
Free radicals are unstable molecules in the body created as part of the waste products or normal cellular metabolic activities. YOU ARE ONLY AS OLD AS YOUR CELLS! Recent research has given new hope to the task of rejuvenating and extending the lifespan of cells.
This cellular rejuvenation, life extension, and improved vitality has been achieved using special antioxidants that can actually keep cells looking and acting younger - and may even reverse the aging process !
The human body represents one of the most perfectly designed and coordinated structures. However, all these structures are held in position by a dense network of systems which constantly work together to keep us going.
The brain represents only 2% of the human body weight; it receives 15% of the cardiac output, 20% of total body oxygen consumption, and 25% of total body glucose utilization.
The energy consumption for the brain to simply survive is 0.1 calories per minute, while this value can be as high as 1.5 calories per minute during crossword puzzle-solving.
When neurons in a particular region of the brain are highly active, they consume a great deal of oxygen, which results in recruitment of extra blood flow to that region.
Neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, motor neurone disease, and Huntington's disease are caused by the gradual death of individual neurons, leading to decrements in movement control, memory, and cognition.
Mental performance in the human body can be improved by "feeding" the brain with extra oxygen or glucose, according to research published today that could have implications for the treatment of dementia.
It's well known that after about nine minutes of no oxygen, from drowning or whatever, you can kiss your brain good-bye. Brain cells are extremely sensitive to oxygen deprivation and can begin to die within five minutes after oxygen supply has been cut off.
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