Terms to know about sight and hearing

Eye anatomy	see the list of structures for lab at https://www.dropbox.com/s/6qkq5ihczuj3e5q/Brain%2C%20Eye%2C%20and%20Ear.docx?dl=0
Rhodpsin	The colored pigment inside rods which reacts to light. You should know how this pigment affects the rods' firing
Bipolar cells	Pick up the sensory message from rods and pass it to ganglion cells
Ganglion cells	Carry the sensory message from bipolar cells to the brain. The optic nerves are made up of the axons of all the ganglion cells.
Convergence	When more than one rod attaches to a single ganglion cell. This makes vision more sensitive in low light
Sensitivity	How well you can see in low light. The more rods you have, the more sensitive your vision is
Acuity	How sharp your vision is. Your vision is sharpest if you have only one photoreceptor attached to each ganglion cell.
Optic chiasm	Where half of the axons from the ganglion cells cross over to the other side of the brain
Optic tract	The axons of the ganglion cells as they pass through the tissue of the brain
Superior colliculi	The part of the midbrain that controls eye reflexes
Optic radiation	Where the axons carrying information about sight fan out to attach to cells in the visual cortex
Visual cortex	In the occipital lobe
Ear anatomy	see the list of structures for lab at https://www.dropbox.com/s/6qkq5ihczuj3e5q/Brain%2C%20Eye%2C%20and%20Ear.docx?dl=0
Conduction	When the pressure waves in the air are transmitted through ear structures
Conductive deafness	When a person becomes deaf because they can�t transmit the pressure waves
Sensorineural deafness	When a person can transmit the pressure waves, but their hair cells don�t fire in response
Bony labyrinth	The �tunnels� and �chambers� in the temporal bone within which the hair cells live
Vestibulocochlear nerve	The axons from the hair cells, going into the brain
Inferior colliculus	The part of the midbrain where reflex responses to sound are initiated
Auditory cortex	In the temporal lobe
Eustachian tube	Connects the middle ear to the throat; helps equalize air pressure on the two sides of the eardrum