List and briefly describe the function of the following structures: cervical enlargement, lumbar enlargement, Dorsal roots, ventral roots, dorsal root ganglia, spinal nerves, mixed nerves,

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions