Which one of the following is INCORRECT about spinal nerves?
A) There are 7 cervical nerves.
B) There are 12 thoracic nerves.
C) All spinal nerves are mixed nerves.
D) The lumbar nerves contain both sensory and motor components.
E) Except in the thoracic region, the main portion of a spinal nerve forms networks called plexuses.

Question

Quizplus · Accepted Answer

There are actually 8 cervical nerves (C1-C8), not 7. The numbering of cervical nerves is unique in that the first cervical nerve exits above the first cervical vertebra, leading to a total of 8 cervical nerves despite there being only 7 cervical vertebrae.

Which One of the Following Is INCORRECT About Spinal Nerves