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.
Hair grows about half an inch a month (faster in the summer than the winter). This means that your hair grows as average six inches a year at the rate of about 1/60th of an inch a day. Unfortunately your genes govern the rate of growth, so there's nothing you can do to speed it up.