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.
General Considerations. Hair grows approximately Â½ inch per month, for a total of six inches in one year. This rate is an average across races. Asian hair grows slightly faster than this average, Caucasian hair grows near the average,and black hair trends to grow at or just below this average each month.