Power of human Heart and Brain

[gianeshwar]

If heart forces 4 litres of blood per minute and blood pressure is 125 mm of Hg column and we consider pulse rate as 60 beats per minute then by calculation power of heart comes as approx. 1.111 watts.
If I consider the person is just lying down and obviously brain is also active .
My question is " Can brain under these average conditions be of about 20 watts as told in Michio Kaku's book"Physics of the impossibe" as I remember.

 

[rumborak]

The brain isn't powered by the pressure of the blood. It gets its energy through the sugar etc molecules that are transported in that blood stream.

 

[gianeshwar]

The brain isn't powered by the pressure of the blood. It gets its energy through the sugar etc molecules that are transported in that blood stream.

Means energy from chemical reactions?

 

[rumborak]

Yes. Specifically, a molecule called nucleoside triphosphate (NTP) is responsible for providing energy to cells.

 

[A.T.]

The brain isn't powered by the pressure of the blood.

Unless you get really angry.

 

[gianeshwar]

Thank You friends!