Zhou Dynasty (c. 1050-256 BCE). 1  The Zhou dynasty (c.1050-256 BCE) conquers and succeeds the Shang; later generations seek to reclaim and preserve the idealized peace of the early Zhou (or Western Zhou) period.
Learning Center > Health Library > Optic Nerve. The optic nerve is located in the back of the eye. This structure is responsible for transferring the images we see from the retina to the brain. The front surface of the optic nerve, which is visible on the retina, is called the optic disc.
Along with the branches of the central retinal artery and vein, they make up the retinal nerve fiber layer (RNFL). Each axon proceeds in a more-or-less direct course toward the optic disc, located medially to the macula lutea. Axons which must pass near the macula lutea arch around it, keeping it free of obstruction. The optic disc (also called the optic nerve head) is the exit point for the ganglion cell axons. At the optic disc, these axons collect to form the optic nerve and as a group turn at right angles again, plunging through the retina, choroid, and sclera.