A Person Who Has 20/20 Vision Can Read

question 230

Multiple Choice

A person who has 20/20 vision can read:

• A)letters that are 1/20 of an inch high from a distance of 20 inches away.
• B)20 letters in 20 seconds.
• C)letters that are 0.20 inches high from a distance of 20 yards.
• D)the smallest line of letters on the Snellen chart from a distance of 20 feet.

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Definitions:

Acetylcholinesterase

An enzyme that catalyzes the breakdown of acetylcholine and some other choline esters that function as neurotransmitters.

Cholinergic Synapse

A synapse that uses acetylcholine as its neurotransmitter, facilitating communication between neurons in the nervous system.

Synaptic Cleft

The small gap between neurons at a synapse, across which neurotransmitters are released to transmit neuronal signals.

ACh

Acetylcholine (ACh) is a neurotransmitter involved in muscle activation, memory, and learning by transmitting signals between nerve cells.