what is the main function of hair in the human body?
447774
To help the body in homeostasis of body temperature!Also will stand on end when frightened like a cat but due to evolving to have less hair you just get goosepimples!\n\nWe probably evolved to have less hair due to our ability to produce clothing!Possibly still have head hair as we either didnt produce hats, or it conferred some advantage such as preventing heatstroke(by protecting the back of the neck and forehead)or sexual selection.
601625
Small follicles in epidermis produce hair.All these undergo formatting in a three stage cycle.Anagen is a period when hair grows actively,Catagen is a period when growth rate slows down and finally Telogen is the period of rest at the end of which the hair falls out and new hair starts growing in the follicle.Hairs on the head have the longest anagen period of four to eight years and have two to four months of rest stage allowing the hairs to grow to max.length.Hairs on eyelashes,armpits,pubic region,legs and other parts of body have growth periods of one to six months followed by a two to four months period of rest.That is why these hairs grow faster and reach a stubby fixed length.Animal hair is known as fur and only human hair which mother nature so exquisitely programmed irrespective of gender difference is a hairy (knotty or naughty as you view it)problem and a constant source of worry to retain as wanted and remove as unwanted.
1153227
It is possible, Human hair has good thermal insulation properties. The only problem, I can think of is the flammability of human hair.
924761
The skin  ( & its derivatives, nails,hairs, sweat & sebaceuous glands) composes the integumentary system.
197051
all the hair on your body, head, arm, leg, pubic, all serve the same purpose to filter out airborne germs.  Men and women shave their pubic hair to look and feel more attractive.  Some men and women shave off all their pubic hair.
651022
LOL, funny things what ya body does dont ya think!\nThe hair grows faster because the skin cells that react to the coldness of the atmosphere, then the hair cell inside the skin cell starts sprouting triggerd because of the nerves. The hair isnt is to keep your skin and nervous cells warm. \nHey and not just in antartica dude!\nI hope this helped you. \nKind Regards, Timothy H. (Age 12, W.A.)
80428
Body hair is governed by your genes. There are things you can do to remove it, or to lighten it, but you cannot do anything about its growth rate. There are some products out in the market that is suppose to retard hair growth, but I don't know how effective they are.
267305
human body and molecular biology..
604803
Our skin is the largest organ of our body. Skin serves several functions: it guards the underlying organs and muscles, it regulates our body temperature, it provides our sense of touch and it synthesizes vitamins D and B.\n\nThe skin includes parts like our hair and nails. In addition, there are several layers to skin, e.g., the epidermis and the dermis. Skin accounts for 15% of our body weight so you can see why it's called the largest organ in our body.\n\nThe above is basic information and you can already see how complex skin is. So there's lets to research and talk about when you're talking about skin.\n\nHope this helps.
686432
Anything that was once a part of the person's body is effective. That's just the easiest to get. Usually some of their hair. What is part of the persons body can be a link to that person. It can be extremely effective if you know what you're doing. Otherwise, it's just a waste of time.
623782
Well, hair is part of the skin, as you get old, your skin shows, rigtht, no wonder why the hair does too.
310750
In contrast to most mammals, humans do not have an all-embracing intense hair on their body. Several theories have been advanced to explain the bareness of human body hair. One suggests that nature selected humans for shorter and thinner body hair as part of a set of adaptations including bipedal locomotion and an upright posture. There are several problems with this savanna theory, not least of which is that cursorial hunting is used by (other) animals that do not show any thinning of hair, and that hair similar to chimpanzees and gorillas also shades the skin from radiant heat and protects it from hot winds, and thus another mechanism for heat loss is not required. Another problem is that bipedal locomotion apparently now predates hominids moving from a forest environment to a savanna environment. A more recent theory for human hair loss has to do with a possible period of bipedal wading in a salt marsh in the Danakil region of Ethiopia, possibly occurring in the hominid lineage between 5 and 7 million years ago. As a wading animal, it was more efficient to develop short body hair and a layer of subcutaneous fat for streamlining and insulation in the aquatic environment; the eccrine sweat glands developed later after the hominids left the water; see Aquatic ape hypothesis. One problem with this theory is that both chimpanzees and gorillas have the same density and distribution of the eccrine glands, but that they have not been developed for sweat production.\n\nA third theory for the thin body hair on humans proposes that Fisherian runaway sexual selection played a role here (as well as in the selection of long head hair). Possibly this occurred in conjunction with neoteny, with the more juvenile appearing females being selected by males as more desirable; see types of hair and vellus hair. The human female body hair typically has more vellus hair (making the skin appear bare), while the male body typically has more terminal hair (especially on the chest, abdomen and back). Thus sexual selection can explain the sexual dimorphism in human body hair, with the results of selection being more evident (more extreme) in the female than in the male, a point which the other two theories cannot address without proposing substantially different behavior between males and females. Also, we see that artificially bare (shaved, etc.) legs, arms, etc. on women are seen as "sexy" even today, while body shaving is not nearly as common for men.
335288
There are several hypotheses, one is that it the hair traps scent or pheromomes and may have been useful for attracting a mate in the past. Another is that it reduces friction when moving the arm.  Yet another is that it is just vestigial body hair.  Be interested to see what others suggest.\n\nRegards
819440
The growth of human hair\n\nEach human head carries roughly 100,000 hair follicles. \nEach follicle can grow many hairs over a lifetime: on average, each grows a new hair around twenty times. \nNot all these follicles are actively growing hairs at any one time. From the moment when it is first formed, each follicle undergoes repeated cycles of active growth and rest. The length of the cycle varies with the individual, and also with the part of the body on which the hair is growing. \nThe hairs on an adult scalp do not grow in unison, as they do in an unborn baby. They are 'out of cycle' with each other. If this were not so, everyone would go temporarily bald from time to time. \nThe growing and shedding of hair as a whole seems to happen at random, but for each hair follicle the process is precisely controlled. No one knows for certain, however, exactly how the body controls these cycles. \nPlucking a hair from a follicle brings forward the next period of hair growth in that follicle\nOver the years, the number of follicles capable of growing hair declines naturally. The decline is especially noticeable on the top of the head. Some follicles increasingly produce only fine, short non-pigmented hairs that look more like vellus hairs than terminal hairs. In older women, this leads to a general thinning of hair. In men it tends to lead to common baldness. If you look at a bald scalp you will see these fine, poorly pigmented hairs.
830044
Ha! What an interesting question. Hair is regulated by our hormones, when a "child" becomes an adult and enter's their sexual maturity they start producing various sex hormones which causes hair in places to grow (unfortunately). Hair has many purposes: warm, decreases friction (with sexual activity), traps pheromones (especially arm pit, male facial hair, and genital hair) which in turn attracts the opposite sex.  The female population (at least many females that I know) spend a lot of time and money attempting to rid ourselves of hair . . . guess another purpose is served . . . supporting the economy! LOL!
74539
Your eye brows (that you probably pluck) are there to protect your eyes from blinding sunlight, dust, and sweat.  Your nose hairs (which you probably don't even know you have) help filter out debris from entering your lungs.  If you are a woman, the hair on your head believe it or not attracts the attention of men.  As for the rest of it, well...,depends on your personal beliefs.  I think that we are primates, which are all hairy.  All mamals have hair, even dolphins and whales.
742185
The dermal papillae would be akin to the root or the progenitor to the hair.  The cells of the dermal papillae control development, differentiation and cycling of the hair follicles