Motor fiber types Flashcards
Where do cell bodies live with Alpha motor neurons?
Ventral horn
What do alpha motor neurons innervate?
Skeletal muscle
Where do cell bodies live with Gamma motor neurons?
Ventral horn
What do gamma motor neurons innervate?
Intrafusal muscles (muscle spindle)
What is another name for Type B fibers?
preganglionic autonomic axons
Where do the cell bodies live with Type B fibers?
Lateral grey horn
What is another name for Type C fibers?
postganglionic autonomic axons
What do preganglionic autonomic fibers release?
Ach
Are preganglionic sympathetic fibers short or long? Postganglionic?
Preganglionic sympathetic: short
Postganglionic sympathetic: long
Are preganglionic parasympathetic fibers short or long? Postganglionic parasympathetic?
Preganglionic parasympathetic: long
Postganglionic parasympathetic: short