Dr. Brantz wants to test the part of the brain which is active while lying. For this purpose, he will need to make use of the fMRI (functional magnetic resonance imaging) technique. This technique is used for measuring the brain activity by the means of the detecting changes in the blood flow. The neural activation affects the cerebral blood flow, and this change can be noticed using fMRI.
Hence, the answer is 'fMRI'.
The glomerulus hydrostatic pressure.
I believe that the term metabolic rate reflects the energy the body needs to perform only its most essential activities. It is the rate of energy expenditure per unit time by endothermic animals while at rest, or the amount of energy that a person need to maintain the body functions while at rest per unit time.
