After the vesicle coat is complete, the Sec23 coat subunit promotes GTP hydrolysis causes disassembly of the coat.

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Rods 

• Have low acuity or resolution

• are sensitive to low-intensity light

• receptors for night vision (scotopic vision)

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#Unit 7. System Physiology – Animal

Cones 

• Higher visual acuity

• responsible for vision in bright light (photopic vision) Participate in color vision

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Inputs from eye to CNS: 

• Input from the rods 

• Input from the cones

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#Unit 7. System Physiology – Animal

Duplicity Theory 

The existence of these two kinds of input, each working maximally under different conditions of illumination

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#Unit 7. System Physiology – Animal

Axons of retinal ganglion cells 

Received and transduced information and carried to the CNS

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#Unit 7. System Physiology – Animal

Blind spot 

There are no visual receptors over the optic disk.