Researchers studying mice recently linked goosebumps to the regeneration of hair and hair follicles. It seems that the nerves connected to the tiny muscles responsible for goosebumps also connect to hair follicle stem cells, which are the cells responsible for hair growth. So, in response to cold, the nerve tells the tiny muscles in the skin to contract causing goosebumps and the same nerve activates hair follicle stem cells for new hair growth.
They may do this in several ways. Each of these might be more important for furry animals than for humans. Goosebumps may be one of those leftovers from our evolutionary ancestors like the coccyx, or tailbone that serve no important purpose. The new discovery linking goosebumps with hair follicle stem cells might be explained as a longer-term response to cold, at least for animals with fur: they get goosebumps or the animal equivalent in the short run to conserve heat, and thicker fur to keep warmer in the long term.
Most people associate goosebumps with unpleasant situations, such as feeling particularly cold or feeling afraid. Yet there is more to it than that. The arrectores pilorum are hooked up to the sympathetic nervous system, and the sympathetic nervous system has input from many parts of the brain, including those involved with motivation, arousal, and emotion.
So other stimuli may cause goosebumps, for instance:. Though rare, goosebumps can be a sign of a seizure disorder called temporal lobe epilepsy, a disorder of the sympathetic nervous system, or other brain disorders. They are also common during heroin or other opiate withdrawal.
In fact, one explanation for the origin of the expression "quitting cold turkey" is that goose bumps that develop during withdrawal from heroin mimic cold turkey flesh. They are a universal but poorly understood phenomenon, but our understanding is improving. And the recent discovery linking goosebumps with hair follicle regeneration could lead to more than just a better understanding of goosebumps; it could lead to new ways to fight baldness or improve tissue healing.
Or they may serve a more important role than we currently understand and continue to puzzle us for years to come. Reminder Successfully Set! Next Story: How polluted is your home? The surprising reason why we get goosebumps How polluted is your home?
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Intense emotions and their associated responses can be elicited by your what you think, hear, see, smell, taste, or touch. Goosebumps are also associated with the state of feeling emotionally touched in either a joyful or sad way. Sometimes it can be both at the same time. In most cases, goosebumps are nothing more than a temporary nuisance. However, goosebumps can be a sign of a long-lasting or serious medical condition.
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