<prompt> Not true regarding Optic NerveMade of axons of 2nd order neuron in visual pathway47-50 mm lengthIntracranial pa is the longestSmallest pa is intraocular  <response>: CRANIAL NERVE Optic nerve arises from ganglion cell axons. Length 47-50mm. Can be considered as pa of brain 3rd order neuron Protected by meninges Pas: Intraocular, Intraorbital, intracanalicular, intracranial Smallest pa of optic nerve is intraocular Longest pa : Intraorbital Order of Neurons Rods Cones Photoreceptors Bipolar Cells: 1st order Neuron Ganglion Cells: 2nd order Neuron Neurons that take impulse from LGB to Brain: 3rd order neuron 