different between mesencephalon vs neuraxis

English

Etymology

From Latin, from Ancient Greek ????? (mésos, “middle”) + ????????? (enképhalos, “cephalon, brain”); see also cephalon.

Pronunciation

• IPA^(key): /?m?z?n?s?f?l?n/
• IPA^(key): /?m?z?n?s?f?l?n/

Noun

mesencephalon (plural mesencephalons or mesencephala)

1. A part of the brain located rostral to the pons and caudal to the thalamus and the basal ganglia, composed of the tectum (dorsal portion) and the tegmentum (ventral portion).

Synonyms

• midbrain

Meronyms

• tectum
• tegmentum

Derived terms

• hemimesencephalon
• mesencephalic

Translations

English

Etymology

neur- +? axis

Pronunciation

• (Received Pronunciation) IPA^(key): /?nj????æks?s/

Noun

neuraxis (plural neuraxes)

1. (anatomy) The axis of the central nervous system; i.e. the spinal cord, rhombencephalon, mesencephalon and diencephalon.
   • 1984, Oliver Sacks, “The Disembodied Lady”, chapter 3 in The Man Who Mistook His Wife for a Hat (Reset 2007), page 51:

     The picture revealed by spinal tap was one of an acute polyneuritis, but a polyneuritis of a most exceptional type: not like Guillian–Barré syndrome, with its overwhelming motor involvement, but a purely (or almost purely) sensory neuritis, affecting the sensory roots of spinal and cranial nerves throughout the neuraxis.

Further reading

• neuraxis on Wikipedia.Wikipedia