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.
People who weigh less generally carry less blood. Body fat percentage is a major factor in blood volume, as fat contains less blood than muscle; thus, if two people have the same weight, the person who has more fat would actually have a lower blood volume even if he appears to be larger. Gender affects body fat composition in ways that are not entirely known, although sex hormones play a role. Because women are generally shorter and have higher body fat percentages than men, they generally have lower blood volumes. An average woman who is 5 feet tall and weighs 100 pounds has a little less than a gallon of blood in her veins.Learn More
Determining blood type requires that both ABO typing and a test for the blood's Rh factor are performed by a trained professional, states MedlinePlus. The test has several steps that use the reaction of blood to sets of antibodies to differentiate between blood types.Full Answer >
Fresh frozen plasma is administered as an intravenous infusion at a maximum rate of 1 milliliter per kilogram per minute. The volume of each unit of fresh frozen plasma is between 200 and 250 milliliters, notes Medscape.Full Answer >
Blood in humans is red, not blue. It is a misconception that human blood is blue and turns red upon touching oxygen in the air.Full Answer >
Large variations in the shapes of erythrocytes (red blood cells) is a condition called poikilocytosis, according to CellaVision. These shape variations, along with other symptoms, can indicate iron-deficiency anemia in humans. Patient.co.uk reveals that abnormal sizes in red blood cells may also indicate anemia.Full Answer >