| A | B |
|---|
| cornea | 1st part of eye to bend light |
| pupil | hole in the iris |
| retina | structure that contains rods and cones |
| optic disk | blind spot |
| pinna | external part of ear |
| cochlea | part of ear for hearing |
| semicircular canal | part of ear for balance |
| smelling | olfaction |
| central nervous system | contains the brain |
| peripheral nervous system | contains the nerves in the arms and legs |
| neuron | nerve cell |
| dendrite | brings nerve information into the neuron |
| axon | carries nerve information away from neuron |
| synapse | space between nerve cells |
| cerebral spinal fluid | the "blood" for the brain |
| dura mater | outermost meninge |
