A peculiar roughness of the skin produced by cold or fear, in which the hair follicles become erect and form bumps on the skin is called goose flesh.
Goose flesh occurs when the muscles at the base of hair known as erectors or arrectors, contract.The erector muscles are obliquely placed between the hair follicle and the outer part of dermis.They aresmooth muscles that are necessary to move the hair.The contraction oferectormuscle pulls the hair vertical and depresses the epidermis, resulting in goose flesh.