The Postganglionic Fibers That Innervate Glands in the Body Wall

Question

The postganglionic fibers that innervate glands in the body wall or smooth muscles in limbs are
A) white rami communicantes.
B) gray rami communicantes.
C) posterior ramus.
D) anterior ramus.
E) dermatomes.

Accepted Answer

Gray rami communicantes are responsible for carrying postganglionic fibers that innervate glands in the body wall or smooth muscles in limbs. White rami communicantes carry preganglionic fibers from the spinal cord to the sympathetic chain ganglia. Posterior ramus supplies the deep muscles and skin of the back. Anterior ramus supplies the muscles and skin of the anterior and lateral trunk, and the upper and lower limbs. Dermatomes are regions of skin innervated by sensory fibers from a single spinal nerve.