Like all other body cells, your brain’s cells are fueled by glucose. In fact, in relation to its size, the brain demands more fuel than any other organ in your body. While your brain accounts for only about two percent of your body weight, it uses about twenty-five percent of the glucose in your blood. Your brain depends on a regular flow of oxygen to supply the oxidation process. In fact, while your body can go weeks without food and more than a week without water, your brain can only survive minutes without oxygen. There is little room for error when it comes to this essential element of your body’s fuel system.
To transport fuel to and waste from your brain, you need a healthy transport system. That system is your circulatory system, which grows to meet your body’s demands. All of your physical activity creates a need for more fuel, which creates more waste. In response to this need, your body produces more blood and then forms new capillaries, the smallest of all the blood vessels. These new capillaries and blood vessels take more glucose and oxygen deeper into your tissues, which improves the functioning of body organs and processes.
What kind of new blood vessels grow to meet the demand for more fuel to your brain?
- veins
- capillaries
- arteries
- venules
Capillaries grow to meet the demand for more fuel for your brain.
Capillaries grow to meet the demand for more fuel for your brain.
Capillaries grow to meet the demand for more fuel for your brain.
Capillaries grow to meet the demand for fuel for your brain.
What percentage of your blood’s glucose supply is consumed by your brain?
- one-half
- five percent
- twenty-five percent
- ten percent
Your brain consumes twenty-five percent of your blood glucose.
Your brain consumes twenty-five percent of your blood glucose.
Your brain consumes twenty-five percent of your blood glucose.
Your brain consumes twenty-five percent of your blood glucose.
Why does your brain need high levels of oxygen?
- it is the nerve center of your body
- thinking requires lots of air
- high glucose consumption requires high oxygen consumption for burning through oxidation
- to keep the glucose oxygen balance
Your brain needs high levels of oxygen to use oxidation to burn the high levels of glucose.
Your brain needs high levels of oxygen to use oxidation to burn the high levels of glucose.
Your brain needs high levels of oxygen to use oxidation to burn the high levels of glucose.
Your brain needs high levels of oxygen to use oxidation to burn the high levels of glucose.
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