1. Each optic nerve is a bundle of axons that project from retinal ganglion cell

Question

1. Each optic nerve is a bundle of axons that project from retinal ganglion cells to sites within the brain. The site where this bundle leaves the wall of the eye is known as the

optic chiasma

blind spot

2. Why are the optic nerves so large?

the exceptional diameter of axons therein

the large number of ganglion cells within each retina

3. The term decussation denotes axons crossing at the body midline. For the sake of simplicity, we have assumed complete decussation in regard to the optic nerves of our model animal. Where does this occur in body space?

optic chiasma

optic tectum

4. We have assumed that each optic tract within our model animal has a medial and a lateral branch. The medial branch projects towards the

thalamus

midbrain

5. The lateral branches of our model animal’s left and right optic tracts project towards the

thalamus

midbrain

6. What do thalamic interneurons enable?

information relay

central integration

Explanation / Answer

1- Blind spot here is phtoreceptor absent and no rods and cons occur thatswhy it is called blind spot.

2- the large number of ganglion cells within each retina.

3- optic chiasma here chaisma like formation occur due to crossing of foptic nerve.

4- midbrain

5- thalamus

6- information relay

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