While deep tendon reflexes involve a single connection between afferent and efferent neurons (i.e., a monosynaptic reflex), the expression of a deep tendon reflex requires additional spinal connections.
Determining how many hairs are lost from the average human body in a typical day can be difficult, however. Some experts believe daily hair loss of between 50 and 100 hairs can be considered normal, while others say up to 200 hairs may be lost on average per day. Anything above the 200 hairs per day mark, however, should be considered excessive. There are many myths surrounding what is normal in regards to hair loss. Within the standard measurement, the rate of hair loss can vary based on your age as well as genetic influences.
However, basically the longer hair follicle, found on the scalp, has a longer growth period than pubic or armpit hair follicles. So the hair on the scalp is shed very slowly compared to the other regions. Compare this: Scalp hair is about 1 cm per month or 0.34 to 0.36 mm per day throughout life. Meanwhile, eyelash or brow growth at 0.16 mm per day in average. Beard hair at 0.38 mm/day. Once again, it depends on hormone. I shave my beard every three days, while my friend does it every day.