Answer
Melanosomes are synthesized, packed in vesicles, and released from melanocytes via exocytosis.
These vesicles are engulfed by keratinocytes by phagocytosis. Normally during phagocytosis, the imported cargo is transported to lysosomes for degradation. This must be inhibited for melanosome organelles to stay in the keratinocyte.
Work Step by Step
The skin pigment melanin is produced in melanosomes that are present in melanocytes, which are pigmented cells. Pigment globules are like vesicles that contain melanosomes, which are released by protoplasmic extensions of melanocytes.
This cargo is taken up by microvilli of keratinocytes. The melanosome transfer follows the shedding vesicle system, and the process is referred to as phagocytosis.
