Week 7 review

sensory neurons that absorb and convert light into neuronal responses are called what?

• Cones

• Rods

• fovea

• photoreceptors

which of the 5 retinal cells run horizontally at the level of bipolar and ganglion cells?

• photoreceptors

• amacrine

• horizontal

• bipolar

_____ are found in the periphery and are responsible for low light detection, while ______ are found in the fovea and are responsible color vision.

• ganglion cells, photoreceptors

• cones, rods

• rods, cones

• photoreceptors, bipolar cells

A blind person is still able to detect night from day because of which mechanism?

• intrinsically photosensitive ganglion cells have a signal that is sent to the hypothalamus which is linked to the pineal gland which releases melatonin

• the intrinsically photosensitive ganglion cells are projected to the thalamus and linked to the pineal gland releasing melatonin

• horizontal cells project to the hypothalamus and then to the pineal gland releasing melatonin

• bipolar cells are projected to the thalamus and then to the pineal gland releasing melatonin

_______ have 12 classes of photoreceptor cells allowing them to see UV light

Why do we have a blind spot?

• The optic chiasm goes through the optic disk to make the blind spot

• there are too many rods in the fovea which creates a blind spot

• The optic nerve goes through the optic disc and makes the blind spot

• No idea

label the drawing 1- 4

Choices: chiasm, radiations, nerve, tracts

The majority of cones link to which ganglion cells allowing for high visual acuity and color vision?

• M ganglion

• P ganglion

• amacrine ganglion

• horizontal ganglion cells

Which cortex do the M pathway and P pathways segregate into first?

• V1

• S1

• parietal

• LGN

The axons of the LGN neurons form ________, and synapse with neurons in the _________.

• optic chiasm, temporal lobe

• optic radiations,

  v1 of the occipital lobe

• optic nerve, parietal lobe

• optic tracts, S1