Consist of several intertwining loops among the basal ganglia nuclei & thalamic nuclei Striatum (caudate & putamen) is receiver of input to basal ganglia Frontal cortex especially premotor area
Each strand of hair on the human body is at its own stage of development. Once the cycle is complete, it restarts and a new strand of hair begins to form. The rate or speed of hair growth is about 1.25 centimetres or 0.5 inches per month, or about 15 centimetres or 6 inches per year.
On average, hair grows 0.125 per week, an average of 1/2 inch per month to the maximum of an inch. With heated styling tools a lot slower! I made the mistake of cutting my hair really short awhile back, but it only took me a couple months to grow it back long.