The Posterior Portion of the Semicircular Canal Detects Acceleration in Which

question 52

Multiple Choice

The posterior portion of the semicircular canal detects acceleration in which direction?

• A) linear acceleration in the up and down directions
• B) rotation of the head from side to side, as in moving the ear toward the shoulder
• C) rotating the head as in saying "no"
• D) moving the head up and down as in saying "yes"
• E) linear acceleration in the forward and backward directions

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Definitions:

Iris

The colored part of the eye that controls the size of the pupil and the amount of light reaching the retina.

Colored Part

The iris, the circular structure in the eye responsible for controlling the diameter and size of the pupils and thus the amount of light reaching the retina.

Pupil Size

The diameter of the circular opening in the center of the iris of the eye, which can vary in response to light exposure or emotional state.

Trichromatic Theory

Theory stating that color perception is produced by three types of cone receptors in the retina that are particularly sensitive to different, but overlapping, ranges of wavelengths.