The optic nerve is a tract of the diencephalon that is not completely myelinated until:
5 years after birth
2 years after birth
1 year after birth
3 months after birth
- The axons of the optic nerve are not completely myelinated until 3 months after birth.
- Myelinated axons are normally not found in the retina.
- The optic nerve is not a true peripheral nerve but a tract of the diencephalon; when severed, the optic nerve does not regenerate.
- Myelination in the central nervous system (CNS) is accomplished by oligodendrocytes; oligodendrocytes are not found in the retina.