Colorado Cosmetology Written Practice Exam

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Hair growth from the papilla is influenced by manipulation of what kind of cell?

Cortex cell
Medulla cell
Matrix cell
Sebum cell

The correct answer is: Matrix cell

The hair growth from the papilla is influenced by manipulation of the matrix cells. The cortex cells, medulla cells, and sebum cells do not play a major role in hair growth from the papilla. The cortex cells make up the majority of the hair strand and provide strength and shape, while the medulla cells are responsible for the color of the hair. Sebum cells are responsible for producing oils that keep the hair and scalp moisturized. Therefore, they are not directly involved in hair growth from the papilla. The matrix cells, on the other hand, are the only cells responsible for actively dividing to create new hair cells, making them the most crucial for hair growth.