NEET PG DENTAL EXAM

HISTOLOGY

INTEGUMENTARY SYSTEM SKIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What color(s) does melanin contribute to the skin?
A
Yellow
B
Brown
C
Red
D
Orange
Explanation: 

Detailed explanation-1: -There are two primary types of melanin that influence skin color: eumelanin, which is brown-black, and phaeomelanin, which confers red-yellow pigmentation.

Detailed explanation-2: -Microscopic appearance. Melanin is brown, non-refractile, and finely granular with individual granules having a diameter of less than 800 nanometers. This differentiates melanin from common blood breakdown pigments, which are larger, chunky, and refractile, and range in color from green to yellow or red-brown.

Detailed explanation-3: -If your body makes too much melanin, your skin gets darker. Pregnancy, Addison’s disease, and sun exposure all can make your skin darker. If your body makes too little melanin, your skin gets lighter.

Detailed explanation-4: -According to Bhanusali, the shade that eventually develops is dictated by the ratios of two types of melanin: eumelanin, which manifests as brown and black pigment, and pheomelanin, which appears as red and yellow.

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