Notesale: Turn your study into money

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O

ne question we ask ourselves when we pause to consider just
how much hair we’ve got all over our bodies is, ‘why?’

The human body is known to contain up to 5 million hairs
and about 80-90% of the skin is covered by hair
...

Ethnicity, race and genes are normally responsible for this variation
...


lthough it feels heavenly to run your fingers through your hair, or
to trim and shave various styles to meet the fashion demands of
today; the hair has been found to perform so many roles in the dayto-day running of the body’s activities other than playing a purely
ornamental role
...

Tubular indentations in the skin known as hair follicles are the sites of
hair production
...
The hair shaft is made up of a tough protein
fiber, keratin, and is covered with cuticle which ensures that the hair is

firmly connected to its follicle
...

The human hair is of two main types;
• Fine, transparent vellus hairs: this type is normally found in such
areas as the forehead and bridge of the nose
...


The big question: ‘why?’
Apart from the aforementioned roles, the hair also performs
sensory and protection functions
...
The hair in the nostrils
and ears do the same, albeit with the help of bodily secretions (mucus
and cerumen respectively)
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HAIR GROWTH AFTER PUBERTY

PUBIC HAIR GROWTH

Pubic hair varies in texture and colour among people; tending to be
darker, curlier, thicker or thinner than scalp hair
...
In pre-adolescent children, the pubic area is
covered by vellus hair
...

The main purpose of pubic hair is cushioning the effect of friction
between the thighs and external genitals that could cause bruising and
injury
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UNDERARM HAIR GROWTH

As discussed above, the raised androgen hormone levels, underarm
hair (also called axillary hair) begins to appear at the outset of
adolescence
...
Research has shown that
underarm hair may perform ventilation functions, conducting sweat and
moisture away from the skin like a wick would
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CHEST HAIR & ABDOMINAL HAIR
Vellus hair covers the chest and abdominal regions in pre-pubescent
children
...
in males) occurs about the
period following the time underarm and pubic hairs develop
...
The growth of chest hair
and abdominal hair usually begins along the lateral line of the torso,
growing up from the pelvis to the navel and from the breast bone region
down to the navel
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Chest hairs are necessary as they are a secondary sexual characteristic
that differentiate males from females
...
Usually a male characteristic, facial hair has
been known to be a characteristic of both animals and man alike
...

Beards are also known to shield the skin from harmful UV rays from the
sun
...

Random surveys carried out seem to suggest that facial hair of all sorts
play a role in general attraction, as they are considered a masculine
attribute
...


To shave or not to shave…
Seeing the massive benefits of the hair all over the body, one gets
conflicting feelings on the decision to get rid of this furry covering or
not
...
The
introduction of various swim wear in the mid-1990s brought about a
contrast in public belief, which switched in favour of bare skin
...

In fact, surgery sites having hairs were recently discovered to have a
lesser risk of being infected than sites where the hairs had been shaved
off
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Thus, the decision to keep or get rid of hair on any site is totally up to
one’s will and volition

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