Roots
Each has three roots entering the ganglion and a variable number of exiting branches.
- The motor root carries presynaptic parasympathetic nerve fibers (GVE) that terminate in the ganglion by synapsing the postsynaptic fibers traveling to target organs.
- The sympathetic root carries postsynaptic sympathetic fibers (GVE) that traverse the ganglion without synapsing.
- The sensory root carries general sensory fibers (GSA) that also do not synapse in the ganglion.
Some ganglia also carry special sensory fibers (SVA) for taste sensation.
Read more about this topic: Parasympathetic Ganglion
Famous quotes containing the word roots:
“The cold smell of potato mould, the squelch and slap
Of soggy peat, the curt cuts of an edge
Through living roots awaken in my head.
But I’ve no spade to follow men like them.”
—Seamus Heaney (b. 1939)
“Though of erect nature, man is far above the plants. For man’s superior part, his head, is turned toward the superior part of the world, and his inferior part is turned toward the inferior world; and therefore he is perfectly disposed as to the general situation of his body. Plants have the superior part turned towards the lower world, since their roots correspond to the mouth, and their inferior parts towards the upper world.”
—Thomas Aquinas (c. 1225–1274)
“If the national security is involved, anything goes. There are no rules. There are people so lacking in roots about what is proper and what is improper that they don’t know there’s anything wrong in breaking into the headquarters of the opposition party.”
—Helen Gahagan Douglas (1900–1980)