What Is the Optic Disk

question 371

Multiple Choice

What is the optic disk?

• A)a tiny spot in the center of the fovea where there is a high concentration of rods and cones
• B)the portion of the lens which focuses incoming light
• C)the point at which the optic nerve fibers leave the back of the eye
• D)a transparent membrane which lies just behind the pupil of the eye and that helps funnel light waves to the lens and retina

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Definitions:

Explicit Costs

Direct payments made to others in the course of running a business, such as wage, rent, and materials.

Production Costs

The total expense incurred in manufacturing a product or providing a service, including raw materials, labor, and overhead costs.

Accounting Profit

The total revenue of a business minus its explicit costs, not including opportunity costs.

Opportunity Cost

The opportunity cost of an alternative is the profit you give up to pursue it.