Which of the following statements are true of spinal nerves? (Read carefully and select all of the correct statements.)
A)Each spinal nerve has a dorsal (or motor) root and a ventral (or sensory) root.
B)Most spinal nerves are mixed nerves.
C)The phrenic nerves are motor to the diaphragm.
D)The sciatic nerve supplies the thumb side of the hand.
E)A dorsal root ganglion consists of the cell bodies of motor neurons.
F)The pairs of spinal nerves are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and one coccygeal.

Question

Quizplus · Accepted Answer

A) Each spinal nerve actually has a dorsal (sensory) root and a ventral (motor) root.
B) Most spinal nerves are mixed nerves, meaning they contain both sensory and motor fibers.
C) The phrenic nerve is a motor nerve that supplies the diaphragm, allowing for breathing.
D) The sciatic nerve actually supplies the posterior portion of the leg and foot, not the thumb side of the hand.
E) A dorsal root ganglion contains the cell bodies of sensory neurons, not motor neurons.
F) The spinal nerves are grouped into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerve pairs.

Which of the Following Statements Are True of Spinal Nerves