Which of the following is correct for pupil of human eye?
I. It is the aperture surrounded by the iris
II. The diameter of pupil is regulated by muscle fibres of iris
III. It is a transparent crystalline structure attached to the ciliary body
The correct option is
The ....A.... receives signal from a sensory organ and transmits the impulse a dorsal nerve root into the CNS (at the level of spinal cord) while the ....B.... carries signals from ....C.... to the ....D....
Choose the correct option for A,B,C and Dto complete the given statement