NEET PG DENTAL EXAM

HISTOLOGY

INTEGUMENTARY SYSTEM SKIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do you call those spots where it produces black to color brown pigments?
A
Xanthophores
B
Melanophores
C
Lipophores
D
Guanophores
Explanation: 

Detailed explanation-1: -Melanophores contain eumelanin, a type of melanin, that appears black or dark brown because of its light absorbing qualities. It is packaged in vesicles called melanosomes and distributed throughout the cell. Eumelanin is generated from tyrosine in a series of catalysed chemical reactions.

Detailed explanation-2: -Melanophores are specialized cells derived from the neural crest that contain membrane bound vesicles called melanosomes. Melanosomes are filled with melanin, a dark, non-fluorescent pigment that plays a principal role in physiological color adaptation of animals.

Detailed explanation-3: -Melanocytes are often referred to as melanoblasts and melanophages as melanophores. Melanocytes are now recognized as the basic pigment cells not only of human melanomas but of melanomas of all vertebrates. Melanocytes and melanosomes are present in albino skin and hair follicles, but they contain little or no melanin.

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