Hair bulb意思

"Hair bulb" is a term used to describe the base of a hair follicle, where the hair shaft originates. It is the part of the follicle that is responsible for the growth of the hair. The bulb contains specialized cells that multiply and grow, pushing the hair shaft outward and causing hair growth. The cells in the hair bulb are constantly dividing and producing new cells, which is why hair is able to grow.