Exam
Melanocyte
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Melanocyte
, Melanosome, Melanin
See Also
Melanism
Hyperpigmentation
Brown Skin Lesion
(or
Black Skin Lesion
)
Physiology
Located in
Basal Cell Layer
of skin
Melanosome organelles are produced by Melanocytes
Melanosome transferred to
Keratinocyte
s
Melanin (brown pigment) produced within Melanosome
Tyrosine converted to Melanin
Melanin screens out sunlight ultraviolet rays
Hyperpigmentation
Increased Melanosomes
Sun Exposure
Hormonal control
See
Hyperpigmentation in Pregnancy
Darker
Skin Color
in certain ethnic groups
Same number of Melanosomes as lighter skin
Darker skin results from larger Melanosomes
Other factors affecting pigmentation
Skin vascularity
Presence of Carotene
Thickness of
Stratum Corneum
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