Maverick County Courthouse, Eagle Pass, Texas 188/254 âThe Rio Grande forms Maverick Countyâs western and international border with Mexico; the county is bordered on the north by Kinney County, on the east by Zavala County, and on the south by Webb County.
The function of the optic chiasma  is to relay electric signals as they pas â¦ s from the optic nerve to  the brain.
The nerve ... Click to read more below. The optic chiasm or optic chiasma is an X-shaped space just in front of the pituitary gland where optic nerve fibers pass through to the brain.The fibers from the nasal half of each retina cross over, but those from the temporal sides do not.he nerve ... Click to read more below. The optic chiasm or optic chiasma is an X-shaped space just in front of the pituitary gland where optic nerve fibers pass through to the brain.