Search results
Aug 16, 2023 · The identity of cranial nerve II (CN II), also known as the optic nerve, predates Galenic anatomy. Known to the Greek fathers of anatomy as nervus optikus , the optic nerve has the responsibility of transmitting special afferent impulses of light to the brain.
Dec 16, 2014 · Due to its unique anatomical relation to the brain, the optic nerve is surrounded by the cranial meninges (not by epi-, peri- and endoneurium like most other nerves). In this article, we shall look at the anatomy of the optic nerve – its course, sensory functions and clinical relevance.
May 27, 2023 · Anatomy. The optic nerve is mainly made up of the axons (nerve fibers) of the retinal ganglion cells from the retina. The optic disc or nerve head is the point where the axons from the retinal ganglion cells leave the eye. The nerve head appears as a white circular structure in the back of the eye. There are no photoreceptors on this structure.
In neuroanatomy, the optic nerve, also known as the second cranial nerve, cranial nerve II, or simply CN II, is a paired cranial nerve that transmits visual information from the retina to the brain.
Apr 11, 2024 · Anatomy. Where is the optic nerve? You have an optic nerve at the back of each eye that connects directly to your brain. To get there, the optic nerves extend out from your retina and travel a route that includes the following: The optic canal: This is a bony opening that your optic nerves pass through to enter your skull and reach your brain.
Nov 7, 2022 · The optic nerve is the second cranial nerve (CN II) responsible for transmitting visual information. The optic nerve contains only afferent (sensory) fibers, and like all cranial nerves is paired.
Feb 20, 2024 · Anatomy. The optic nerve exists as a bundle of about 1.2 million nerve fibers made up of retinal ganglion cells (RGCs) and glial cells. 2 Glial cells produce and maintain the supportive tissues of the CNS that interact with the optic nerve. They include oligodendrocytes, astrocytes, and microglia.
Nov 5, 2018 · The optic nerve (ON) is constituted by the axons of the retinal ganglion cells (RGCs). These axons are distributed in an organized pattern from the soma of the RGC to the lateral geniculated nucleus (where most of the neurons synapse). The key points of the ON are the optic nerve head and chiasm.
Dec 21, 2022 · The optic nerve, also known as the cranial nerve II, is a bundle of nerve fibers that carry visual information from the retina of the eye to the brain. It plays a crucial role in our ability to see and interpret the world around us.
Apr 7, 2019 · Cranial nerve two is also known as the optic nerve. The optic nerve passes from the extracranial retina to the intracranial optic chiasm. The retina is a multi-layered cellular structure that receives light in the form of photons and converts this to an electrochemical action potential.
