Which of the following is/are true regarding glucose transport to the brain? There could be multiple answers.
a) Glucose uptake by the nerve cells of the brain is dependent on insulin
b) Greater concentrations of glucose in the blood should increase the rate at which glucose moves out of the capillaries in the brain
c) Given the same concentration gradients of glucose, the rate at which glucose is taken into nerve cells of the brain should be greater than the rate at which glucose moves from the intracellular fluid of intestinal cells to the extracellular fluid surrounding them
d) Increased rates of glucose conversion to either glycogen or fatty acids could decrease uptake by nerve cells of the brain
The Attempt at a Solution
So far, I chose answer D because if glucose is being taken up by the liver (glycogen storage) or adipocytes (triglycerides/fatty acids) then that means there is less glucose to be taken up by nerve cells in the brain
I did not choose answer A because I found somewhere that it GLUT3 is not dependent on insulin
The other ones I am not so sure about. If someone could please help me with this that would be much appreciated!