With One Exception, Each of the Following Units Can Be

question 22

Multiple Choice

With one exception, each of the following units can be used to express mass. What is the exception?

• A)newton
• B)slug
• C)gram
• D)N•s²/m
• E)kilogram

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Definitions:

Vascular Tunic

Middle layer of the eye; contains many blood vessels.

Iris

Specialized portion of the vascular tunic; the “colored” portion of the eye that can be seen through the cornea.

Fovea Centralis

The fovea centralis is a small depression in the retina of the eye where visual acuity is highest, due to the concentration of cones, which are photoreceptor cells responsible for color vision.

Optic Disc

The point in the eye where the optic nerve connects to the retina, often referred to as the blind spot because it lacks photoreceptors.