The optic vesicles project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk.
Closure of the choroid fissure in the optic stalk occurs during the seventh week of development. The former optic stalk is then called the optic nerve. The Bottom Line: the optic stalks are the structures that precede the optic nerves embryologically.
Famous quotes containing the word stalk:
“I sometimes wonder whether, in the still, sleepless hours of the night, the consciences of ... professional gossips do not stalk them. I myself believe in a final reckoning, when we shall be held accountable for our misdeeds. Do they? If so, they have cause to worry over many scoops that brought them a day’s dubious laurels and perhaps destroyed someone’s peace forever.”
—Mary Pickford (1893–1979)