GENERAL HISTOLOGY

Detailed explanation-1: -The arrector pili muscle (APM) consists of a small band of smooth muscle that connects the hair follicle to the connective tissue of the basement membrane. The APM mediates thermoregulation by contracting to increase air-trapping, but was thought to be vestigial in humans.

Detailed explanation-2: -The hair shaft is formed by the proliferation and differentiation of the matrix cells upward through the lumen of the follicle. The differentiated hair consists of keratinocytes that form a medullary core surrounded by a cortex.

Detailed explanation-3: -In addition to kickstarting your follicles through targeted scalp massages, certain topical hair-care products like serums and scalp cleansers can help prompt your follicles to get back to work. They contain ingredients that, when applied directly to your scalp, work to stimulate and nourish your follicles.

Detailed explanation-4: -Goosebumps occur when tiny muscles in our skin’s hair follicles, called arrector pili muscles, pull hair upright. For animals with thick fur, this response helps keep them warm.