Q:

How many liters of blood are in the human body?

A:

The average adult human carries roughly five liters of blood. This number fluctuates depending on height, weight and muscle mass.

This five-liter average is estimated for a standard adult male weighing 160 pounds. The volume of blood in a person is roughly one-eleventh of his body weight. There is some evidence that people at higher altitudes may have more blood than average to make up for the lack of oxygen in the atmosphere. Although there are four different blood types, type has no correlation with the amount of blood in a body.

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Related Questions

  • Q:

    How many gallons of blood are in the human body?

    A:

    An average adult man weighing 160 pounds contains one and a quarter gallons of blood, or 10 pints. Estimation of blood volume is based on gender, age, weight, amount of lean body mass and even altitude: people who live at higher altitudes possess more blood to provide extra oxygen.

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  • Q:

    What is the temperature of human blood?

    A:

    The normal temperature of human blood is roughly 98.6 degrees Fahrenheit, also known as "blood heat." This is also the normal body temperature for humans, although the temperature fluctuates by as much as one degree throughout the day. Blood gets closer to the skin to shunt excess heat, and blood vessels constrict to draw more body heat inward when the body gets too cold.

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  • Q:

    What are the different human blood types?

    A:

    The eight types of blood are A negative, A positive, B negative, B positive, AB negative, AB positive, O negative and O positive. The type of blood a person has depends on whether or not two different antigens are present on the red blood cell in his body.

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  • Q:

    How is oxygen transported around the human body?

    A:

    Oxygen is transported throughout the body via the cardiovascular system, according to the National Register of Personal Trainers, or NRPT. The lungs, blood, heart and blood vessels work together to carry oxygen around the body.

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