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.Know More
Muscle activity generates more heat in the body and keeps the body warm. This is why humans involuntarily shiver. This may also explain the phrase "get the blood pumping" to increase body heat.
Body temperature, and therefore blood temperature, can be measured many ways. The most common method is through the mouth or armpit. Temperature can also be measured on the ear, forehead or in the rectum.
When blood is stored after someone donates a pint of blood at a blood collection center, it is kept at a temperature of 6 degrees Celsius, or 42.8 degrees Fahrenheit, for up to 42 days in cold storage until the blood is needed. Blood platelets are stored at room temperature in agitators for up to five days. Blood plasma and cryoprecipitate are frozen and stored for up to one year.Learn more about Blood
Blood viscosity is in no way affected by the heat or cold of the surrounding environment, so blood does not thin in hot weather. Experiences of extreme temperatures differ from the effect they have on the blood and other internal anatomical elements of the human makeup.Full Answer >
Human blood is not blue; it is always red. While blood may appear blue as people look at their veins, this is due to the way body tissue and blood absorb light.Full Answer >
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.Full Answer >
An average adult that weighs approximately 150 pounds will have about 186 ounces of total blood volume. Children that are about 80 pounds will have about 93 ounces, or half the amount of an adult.The amount of blood that the human body contains is about 7 percent of its weight.Full Answer >