Answer to Question 1
FALSE
Explanation: White matter, not gray matter, contains myelin. Myelin is a white, insulating coating around the axons of larger neurons.
Answer to Question 2
B
Explanation: A) X-rays are used during arteriography.
B) Correct Magnetic resonance imaging uses a magnetic field, not x-rays.
C) X-rays are used during roentgenography.
D) X-rays are used during fluoroscopy.