Answer. Hair is to protect our bodies from the elements, helps regulate heat and is a sensory item this is why each hair follicule has nerve endings attached.

The structures of a hair follicle include the layers and types of cells within the hair follicle ... They secret an oily substance called sebum, whose functions include: ...

the part beneath the skin, called the hair follicle or when pulled from the skin, called ... Hair also has a sensory function, extending the sense of touch beyond the ...