Three physiological factors that affect the color of skin are: volume of blood in dermal vessels, carotene in the subcutaneous layer, and various diseases.

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The volume of blood in dermal vessels affects the color of skin by making it appear red or pink due to increased blood flow. Carotene in the subcutaneous layer can cause a slightly yellowish color in the skin. Various diseases can also affect skin color, such as jaundice causing a yellow tint and cyanosis causing a blue or purplish coloration.

Three Physiological Factors That Affect the Color of Skin Are