Im Sorry But We Don't have This Answer :(
O blood
What is the chemical and nervous control of blood vessels?
Certainly, humans can digest blood, which is very nutritious; blood (from cattle) mixed with milk is the main component of the traditional Zulu diet, and even the European diet does include such things as blood pudding and blood sausage.
The same as a humans blood vessels, to take blood to the heart.
Via the blood.
technology has helped control the blood flow by putting in a fake heart or a microchip in your heart which does the same job as the heart but has to be replaced
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i do not beleive that humans have the technology to have made a calculator that measures strate from the stream of blood the doctors have to extract blood in order to find a blood pressure
Yes, but it's very hard for her.
IAIB (4)
Because he's what they call a vegetarian vampire. he's learned to control himself around humans although he thirsts for there blood desperately.
They called it 'blood control' but didn't go into detail about the control mechanism. It affected only people with a certain blood type, and as the Doctor explained, the control was not strong enough to actually force a person to kill themselves, the Sycorax hoped the threat alone would suffice.
Vampires do not change into bats. That's not true. They don't kill humans either because they're not allowed to or the council would find them and kill them in the most painful way for almost exposing their kind. They get blood from willing donors of people they trust.Also from expires blood from hospitals.
Blood type in humans is an example of multiple alleles.
He thirsts after her blood just like he would after any humans' blood. Jasper is the newest "vegetarian" vampire and it's harder for him to control his thirst.
Blood type does not determine whether marriage is allowed or not.