The brain imaging technique that involves injection of radioactive chemicals in order to measure brain function is called
A. positron emission tomography (PET).
B. mass spectroscopy.
C. electron microscopy.
D. electrochemical detection.
Question 2
Specialized structures that recognize neurotransmitter molecules and, when activated, may cause a change in the electrical activity of the neuron, are called
A. pons.
B. receptors.
C. medulla.
D. autonomic.