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 growth does not occur immediately. Generally, hair grows at roughly Â½ inch per month. This means that the typical head of hair will grow six inches per year. Depending on your personal genetics, your hair may grow more quickly or more slowly.