Where the Optic Nerve Exits the Eye, There Are

question 84

Multiple Choice

Where the optic nerve exits the eye, there are

• A) equal numbers of rods and cones.
• B) more cones than rods.
• C) neither rods nor cones.
• D) more rods than cones.

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Definitions:

Lithosphere

Earth’s upper, rigid layer composed of the crust and uppermost mantle.

Continental Crust

The thick layer of granite, sedimentary, and metamorphic rocks that forms the continents and continental shelves, distinct from oceanic crust.

Oceanic Crust

A thin layer of Earth's crust that lies beneath the ocean basins, composed mainly of basalt.

Elevation

The vertical distance of an object above or below a reference datum (usually mean sea level); generally the height of a ground point above sea level.