A hair grows in a structure in the dermis called a ______.
The _____ is the uppermost portion of a hair strand, extending above the epidermis.
The middle portion of the hair strand is the ____.
Hair growth occurs in the _____, the deepest portion of the strand.
Sticking out the side of the follicle is an oil or _______ gland.
The oil produced by the sebaceous gland is called ________.
The primary component of the hair strand is the protein ____.