Which of the Following Is True About Photoreceptors

question 75

Multiple Choice

Which of the following is true about photoreceptors?

• A) Three types of color-sensitive photoreceptors exist: red, green, and yellow.
• B) If all cones are stimulated equally, all colors are absorbed by the cones and the color perceived is black.
• C) Rods absorb light throughout the visual spectrum but confer only gray tone vision.
• D) In dim light, images are focused directly on the rods in the fovea centralis.

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Definitions:

Artery Walls

The layers of tissue that form the outer structure of an artery, which carry oxygen-rich blood from the heart to the rest of the body.

Atherosclerosis

A disease in which plaque builds up inside arteries, leading to reduced blood flow and can result in heart attack, stroke, or other health issues.

Arteriosclerosis

The thickening, hardening, and loss of elasticity of the walls of arteries, which can restrict blood flow to organs and tissues.

Cardiovascular Risk

The likelihood of experiencing heart-related problems, such as heart attack or stroke, based on individual health factors and lifestyle choices.