Which of the Following Is NOT a Common Characteristic of Dermatomes

Multiple Choice

Which of the following is NOT a common characteristic of dermatomes?

A) Can be used clinically to determine area of spinal cord damage
B) Each dermatome is only served by a single spinal nerve
C) Complete anesthesia of a single dermatome often requires blocking three adjacent spinal nerves
D) Dermatomes are designated based on the cranial or spinal nerve that serves that area of the skin
E) The dermatome serving the face is supplied by the trigeminal cranial nerve