Final answer:
Most hair follicles on the human body are located on the scalp, producing hair made of keratinocytes. The body has varying hair densities, with no hair growth in a few areas, such as palms and soles. Knowledge of hair follicle density and growth patterns is part of understanding the integumentary system in biology.
Step-by-step explanation:
One interesting fact that Malea reads is that a significant portion of the hair follicles on the human body are on the scalp. Hair is a filament that grows from a hair follicle in the dermis of the skin. While this factoid might be presented in some texts, it generally indicates that a high density of hair follicles is found on the human scalp compared to other parts of the body.
Each follicle produces a hair made of keratin-packed cells known as keratinocytes. Although hair covers most of the body, its density varies across different areas, with none on the soles of the feet, palms of the hands, lips, and eyelids, except for eyelashes. This information about hair growth, hair structure, and function is essential in understanding biological concepts related to the integumentary system.