Why Is the Optic Disc Sometimes Called the Blind Spot

question 10

Multiple Choice

Why is the optic disc sometimes called the blind spot of the eye?

• A)There are no rods and cones there.
• B)There are no nerve fibers there.
• C)There are no blood vessels there.
• D)There are rods there, but no cones, so color vision is not possible in that area.
• E)There are cones there, but no rods, so black and white vision is not possible in that area.

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Definitions:

Persistent Depressive Disorder

A chronic form of depression with symptoms lasting for at least 2 years.

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A type of mood disorder associated with childbirth, affecting both sexes, characterized by sadness, fatigue, and anxiety.

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A mental disorder characterized by at least two weeks of pervasive sadness or loss of interest in activities, along with other symptoms of depression.

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A type of depression that occurs at the same time each year, usually during fall or winter, due to reduced natural sunlight.