-3
$\begingroup$

It is my understanding that motor neurons transmit messages to the myocytes of skeletal muscles all over the body. This should make them part of the peripheral nervous system that transmits both the voluntary and involuntary movement of muscles. Now, I came across this site that says motor neurons are part of the Central Nervous system. https://qbi.uq.edu.au/brain/brain-anatomy/types-neurons. Which is right? My book specifying the peripheral information, or the website?

$\endgroup$
1
  • 1
    $\begingroup$ Comments are not for extended discussion; this conversation has been moved to chat. $\endgroup$
    – AliceD
    Feb 22, 2018 at 8:49

1 Answer 1

1
$\begingroup$

The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions. The anterior horn cells, although technically part of the central nervous system (CNS), are sometimes discussed with the peripheral nervous system because they are part of the motor unit.

It appears that even though the motor neurone body lies inside the CNS, the spinal nerves are by definition part of the PNS. Clearly some authors don't follow the convention hence the conflicting views.

https://emedicine.medscape.com/article/1948687-overview

$\endgroup$
3
  • $\begingroup$ I've sent feedback to the University of Queensland to inform them! $\endgroup$ Feb 22, 2018 at 9:01
  • 1
    $\begingroup$ Eww a commercial source. $\endgroup$
    – John Joe
    Feb 22, 2018 at 17:17
  • $\begingroup$ As far as I know universities are run as commercial entities as well. $\endgroup$ Feb 22, 2018 at 17:31

Not the answer you're looking for? Browse other questions tagged or ask your own question.