Here's a breakdown:
* Hair follicle: This is the tiny pocket in the skin where each hair grows from.
* Hair bulb: This is the base of the hair follicle, where the hair is produced.
* Hair root: This is the part of the hair that is embedded in the follicle.
* Hair shaft: This is the visible part of the hair that extends from the scalp and out.
So, the hair closest to the scalp is the hair shaft, which is the part you can see and touch.