Scientists Preparing Preserved Animals Often Inject Colored Latex into the Circulatory

question 11

Multiple Choice

Scientists preparing preserved animals often inject colored latex into the circulatory system to identify different kinds of vessels.What color of latex is likely to be seen escaping from some blood vessels in preserved fetal pigs if pink latex is injected on the arterial side and blue on the venous side?

• A) blue latex
• B) pink latex
• C) both colors mixed together
• D) spots of different colors in different parts of the pig
• E) None of the answer choices are correct.

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Definitions:

Motion Parallax

A depth cue that arises from the relative movement of objects as the observer moves, allowing the brain to gauge distance.

Distance Cue

Visual or auditory signals that help an observer judge how far away an object or sound source is.

Motion Parallax

A depth cue in visual perception where objects closer to the observer move faster across the visual field than objects further away.

Depth

The distance from the nearest to the farthest objects in a scene, giving a three-dimensional perspective.