According to a retired Los Angeles County sheriff's lieutenant, an expert in crime scene analysis and police procedures, during a crime analysis:
"A healthy person, Clark told jurors, walks around with a total blood volume of roughly 12 pints."
"But for death to occur, he said, a person would have to lose about 4 pints, or two of the same IV bags, worth of blood."
This may be found on this link: http://www.courttv.com/trials/polk/060506_ctv.html
40% of its blood volume, approximately 40 pints.
Probably in your hand, if you don't lose to much blood... and your tongue...
All of it
I say you would have to lose half of your blood to lose consencnes, not sure about eyesight
100 liters
about 50% or more
Being declared legally dead does not depend on the quantity of blood lost.
At most, two pints before you are in serious trouble.
20%
alot
If the uterus does not clear quickly enough, you could lose too much blood or develop an infection. But if you lose to much blood to quickly it can be fatal. It is best to let the cleansing process flow naturally, if it starts to stop before it should consult a doctor and massage the uterus.
A lot