Did you know in the nervous system there are different kinds of neurons that carry impulses through you body? Let’s break it down to just the two main kinds:
Efferent – or MOTOR neurons that carry impulses away from the central nervous system (CNS) to effecters such as muscles or glands.
Afferent – or SENSORY neurons that carry impulses from receptors or sense organs toward the CNS.
But how does the savvy student remember the difference with just a letter ( E vs A ) differentiate the two?
Well, you could go back to the Latin roots and learn:
The Latin verb “Ferre” means “carry”
“Ex” means “away” –> ex ferre = carrying away (Efferent – motor impulses are carried away from the CNS to muscles)
“Ad” means “into” –> ad ferre = carrying into (Afferent – sensory impulses are carried into the CNS from skin and sensory organs)
You could just channel your inner 10 year old boy like me and make a fart joke!
How do you smell A – FART? (with a sensory A-FFERENT neuron of course…)
For those wanting to elevate their knowledge after that hilarious low, remember there are also these kinds of neurons:
OK, ready to head back to the gutter?
Fart – Most commonly used reference to flatulence in the Enlish language. Immediate roots are in the Middle Enlgigh words “ferten” “feortan” or “farten” kin to the Old High German word “Ferzan”