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The freezing point of blood?

Dec 31, 2007 by Sk8er | Posted in Other - Science

I've heard it's around 32 degrees Fahrenheit, but then, if you went out side on a really cold day, wouldnt your blood freeze? Or is the fat and movement keeping it from freezing fast? Does anyone know how long it would take to freeze?

I was just wondering about this by the way, i'm not planning to go freeze my blood or anything :p

Blood is not just one liquid, so it doesn't have a single freezing point.

It is a mixture of water, plasma, blood cells (which are more like solid bits floating in a liquid than a liquid, per se), and any number of other bodily fluids. Your body spends a lot of effort to keep you blood warm. Lethal levels of hypothermia start when your core body temperature drops just a few degrees. But that doesn't come up unless you spend a great deal of time outside in extreme cold, because your body is very well designed to prevent just that.

Blood outside the body will freeze at around 32 F, or at least the water in it will. But, the water ice will encase the other elements of the blood, and there is a lot more water than anythign else, so it is effectively the entire mixture freezing for all intents and purposes.

If a deceased person is outside for several days in freezing cold weather can the blood freeze.?

May 10, 2010 by Jackie46 | Posted in Weather

Of course. If the persons body was outside and the temperature was sub-freezing eventually it would freeze solid. Blood is just water with some solid components.

How do antifreeze proteins bind to ice crystals to prevent the blood of icefish from freezing?

Nov 01, 2009 by PHILIP | Posted in Biology

Also, if you know, what is their primary structure?

they use a process called microdynation

Baptised in Blood - Freezing Moon

Mayhem cover. Messed up the solo, and audio is REALLY rough! Timing is also off on a lot of parts, but this is not meant to be taken seriously ...

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