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.
Stress-Induced Hair Loss. Some amount of hair loss is normal â strands fall out over time and get replaced by new ones. However, when youâre under physical or emotional stress the normal shedding of 100 or so hairs a day can speed up to the point where half to three-quarters of your hair can fall out. Known as telogen effluvium, this diffuse and often stress-induced hair loss may not happen right away.