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.
1 One or both of the optic nerves that carry visual information to the brain from each eye.  The optic chiasm, the area where the optic nerves cross each other in front of the hypothalamus of the brain.