Which Process Allows More Light to Reach the Periphery of the Retina

question 94

Multiple Choice

Which process allows more light to reach the periphery of the retina?

• A) accommodation of the lens
• B) transduction of the blind spot
• C) dilation of the pupil
• D) perceptual adaptation of feature detectors

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Definitions:

Glutamate

An important neurotransmitter in the brain involved in cognitive functions such as learning and memory, and is also a key molecule in metabolism.

Retrograde Messenger

A substance that communicates backward from the post-synaptic to the pre-synaptic nerve cell, influencing it.

Nitric Oxide

A gaseous signaling molecule involved in various physiological and pathological processes within the body, including vasodilation and neurotransmission.

Resting Potential

The membrane potential (difference in electric charge between the two sides of the plasma membrane) of a neuron in which no action potential is occurring. The typical resting potential is about –70 millivolts. Compare with action potential.